Rocks, Minerals and Fossils Archives - Page 3 of 7

Dunite £2.25 – £6.00 ex VAT
Dunite igneous rock specimens from the Gusdal olivine pit in Åheim, southern Norway. Composed of green olivine minerals with chromite and pyroxene crystals, the rock forms as intrusive igneous plutons in the earth mantle down to 400 km deep and displays a coarse texture and green colouration. Overall, the samples are fairly granular and weak due to their chemistry and form part of the basal gneiss complex of southern Norway. Ideal for various levels of collectors and for higher level education and research use, the samples are available in three sizes and come supplied in a card tray with an information label.

We also supply Dunite thin sections for microscope study which are available to buy HERE.

Select options
-10%Limited

Dunite Peridotite Slide £18.00 ex VAT
Dunite Peridotite thin section microscope slide. In XPL view these thin sections exhibit the bright and beautiful second order interference colours of olivine. The high relief, lack of cleavage and distinctive fracturing is clearly evident in PPL view making for a very attractive thin section.

Add to cart

9 in stock
Eclogite – Germany £2.00 – £25.00 ex VAT
German Eclogite specimens from Weissenstein, Bavaria. Eclogite is a metamorphic rock, featuring red garnets within a matrix of sodium rich plagioclase called omphacite. These samples are perfect for both collectors and for educational use. They come supplied in a white card tray with an information label. Limited stock available.

Select options
Eclogite – Norway £4.00 – £16.10 ex VAT
Eclogite is an uncommon metamorphic rock, composed of mainly two minerals, reddish-brown garnets and omphacite, a green pyroxene. Other minerals, such as blue kyanite and white quartz may also be present. Over all, it is an attractive looking yet rare rock, with a vibrant green colouration with red garnets to break it up. These rocks come from Almenning, Norway. Specimens are supplied in card trays with labels and come available in 4 sizes.

We also supply Eclogite thin sections for microscope study which are available to buy HERE.

Select options
Sold Out

Eclogite (1kg) £18.00 ex VAT
Eclogite is an uncommon rock, composed of mainly two minerals, reddish-brown garnets and Omphacite (green pyroxene). Other minerals, such as kyanite may also be present. These rocks come from Almenning, Norway. Specimens are supplied in a polythene bag in lots of 1 kg with a label.

Read more

Out of stock
-10%Limited

Eclogite Slide £18.00 ex VAT
Rare eclogite thin section slides cut from our Norwegian eclogite hand specimens. Eclogite is a rare rock, composed of mainly two minerals, reddish-brown garnets and Omphacite (green pyroxene), our thin sections exhibit this clearly.

Add to cart

9 in stock
Sold Out

Epidote – Iran
Specimens of epidote crystal in matrix from Iran, excellent quality mineral specimens detailing the black, opaque colouration of epidote along with the vitreous lustre and prismatic crystal habit. The crystals are randomly orientated and form small beds upon a larger matrix.

Read more

Out of stock
Sold Out

Epidote – Madagascar £2.25 – £6.00 ex VAT
Epidote crystal specimens with radiating sheath formation.the crystal habit of these mineral specimens from Madagascar are exhibited in excellent detail, with a vitreous lustre, green and black colour, supplied in a white card tray with a label.

Select options

Out of stock
Epidote – Norway £2.25 – £6.00 ex VAT
Epidote mineral specimens available in various sizes from Arendal, Norway. These samples are of a massive variety of epidoite, where the crystals are to minute to be seen, they are dense, green in colour and have no other minerals with them. Available in 3 sizes and supplied in a tray with a data label.

Select options
Epidote – USA £1.50 – £2.25 ex VAT
Specimens of Epidote from Michigan, USA. In particular, they have been collected from the Laurium Mine, Osceola, Houghton County. Epidote is an abundant rock forming mineral that is most commonly green in colour. These specimens date from the Stenian period, approximetely 1 – 1.2 billion years ago. These specimens are available in limited supply, with two different size options. They come supplied in a white card tray with information label.

Select options
Epidote (1kg) £10.00 ex VAT
1 kilo of the mineral, epidote, a deep green coloured mineral which was collected from Arendal, Norway in massive form. These samples are available by weight, ideal if you require a large amount for a more cost effective prices, the pieces vary between 20 to 100 mm in size and will come seal in a polythene bag with a small information card.

Add to cart
Erythrite £6.75 – £19.95 ex VAT

Erythrite mineral specimens from Bou Azzer, Morocco exhibiting an eye catching crimson pink colour on a grey rock matrix, some times known as red cobalt, it has been associated with cobalt and silver deposits. This mineral is becoming exceedingly rare to obtain now days, each specimen will come supplied in a card tray with a data label.

Select options
Essexite (olivine monzogabbro) £2.25 – £6.00 ex VAT
Essexite igneous rock specimens from Lanarkshire, Scotland, UK, also known as olivine or nepheline monzogabbro is an intrusive rock with mafic chemistry, composed of nepheline and plagioclase feldspar along with olivine, magnetite minerals as well as augite phenocrysts which exhibit euhedral crystal forms. The rock has a dense weight and overall dark colouration but attractive appearance. It is locally known as Crawfordjohns and was highly sought after as a high quality material to produce curling stones. These samples are excellent for young and older collectors as well as higher educational use, the pieces are available in three sizes and come supplied in a card tray with an information label.

We also supply Essexite thin sections for microscope study which are available to buy HERE.

Select options

51 in stock
-10%Limited

Essexite Slide £18.00 ex VAT
These thin sections exhibit beautiful crystals of olivine, pyroxene and augite, which often shows oscillatory zonation held within a matrix of plagioclase feldspar. The slides supplement the hand specimens nicely and are useful for interpreting the crystallisation history of the rock.

Add to cart

11 in stock
Fault Breccia £2.25 – £6.00 ex VAT
Specimens of Fault Breccia, collected from Great Langdale, Cumbria in the UK. Breccia is a term used to describe a coarse grained sedimentary rock, with large angular clasts, surrounded by a finer grained matrix. The clasts in these specimens are cemented with calcrete which is formed on calcareous materials as a result of climatic fluctuations in arid and semi arid regions. These specimens are fault breccia meaning that unlike other breccia they were formed by tectonic forces making it a tectonite. Available in multiple sizes, each specimen is supplied in a white card tray with information label.

Select options
Favosites Gothlandicus £2.25 – £6.00 ex VAT
A colonial coral which lived in warm shallow waters and is common in the limestone rocks of the Silurian period. Favosites is often associated with other corals that formed small reefs. Favosites specimens have a honeycomb appearance when viewed from above. Specimens come in multiple sizes in a white card tray with an information label.

Select options
Feldspar and Talc – Norway £2.25 – £6.00 ex VAT
Plagioclase Feldspar and Talc specimen from Otta in Southern Norway. Feldspar is the most abundant mineral in Earth’s crust, comprising over 40% of the total estimated mass. This variety, Plagioclase is the Sodium/Calcium rich variety of Feldspar, providing a pale pink colour. Talc is another abundant mineral, notably it is the index mineral for number 1 on Moh’s hardness scale – which means it is one of the least scratch resistance minerals on Earth; it is extremely friable and can leave a smooth, dusty trail on your hands once touched – this is not dangerous and is actually good for your skin! This specimen is perfect for laboratory or classroom analysis, as it shows the symbiosis of 2 abundant and siginificant silicate minerals in one specimen. Also ideal for a collection revolving round Norwegian minerals or silicates. Each specimen is provided with a white card tray and information label.

Select options
Flexicalymene £3.00 – £4.50 ex VAT
2" x 2"3" x 2"
Flexycalymene trilobite fossils, (syn: diacalymene) are a well known extinct species which lived during the Ordovician period, 449 to 443 million years ago and were found in Erfoud, Morocco. These samples exhibit quite clear morphological features such as the pygidium, cephalon and thorax as well as the shape and segments as expected. They appear to have a rusty, limonotic colouration which is due to iron oxide staining in the beds the fossils were found in. Available in various sizes and come supplied in a tray with a label.
- Class: Trilobata
- Species: Flexycalymene sp.
- Age: Ktaoua-Formation, Devonian period, 449 to 443 million years old
- Location: Erfoud, Morocco
Select options
Flint – Devon £2.25 – £3.50 ex VAT
Specimens of Flint, collected from South Devon in the UK. Flint, a variety of Chert, is a micro crystalline, sedimentary rock. It is part of the silicate family and has a conchoidal fracture. These specimens display a monochromatic black interior, offset by a distinct white exterior. These specimens are available in various sizes and come in a white card tray with an information label.

Select options
Flint – Norfolk £2.25 – £6.00 ex VAT
Chert is classified as a sedimentary rock and is a hard cryptocrystalline form of silica. It is found as nodules and bands within the Cretaceous Chalk, with these samples coming from Norfolk in the UK. It is well known for its glassy crystalline texture which allows pieces to be knapped and for this, the rock was used by stone age humans to make various cutting tools and weapons as it often break, leaving sharp edges. The specimens exhibit an earthy brown colour with a waxy lustre and are available in various sizes, which will come supplied in a card tray with an information label.

Select options

30 in stock
Flint – Norfolk (1kg) £8.00 ex VAT
Chert, a hard cryptocrystalline silica found as nodules & bands within the Cretaceous Chalk. Supplied by weight in 1 kilo bags.

Add to cart

21 in stock
Fluorescent Apatite £5.00 ex VAT
Specimens of Fluorescent Apatite, collected from Madagascar. Whilst under normal lighting, these specimens are blue in colour and exhibit a massive form with crystalline texture. When exposed to shortwave UV lighting, they fluoresce in a variety of colours, including yellow, orange, blue, green or even pink. These specimens measure approximately 1.5 – 2 inches in size and come in a white card tray with an information label.

Add to cart
Fluorescent Aragonite Groups £4.00 ex VAT
Fluorescent aragonite mineral specimens from Morocco, this white variation has excellent colouration when exposed to short wave UV lighting, it becomes another worldy green colour, the specimen is only enhance by the aragonite crystals botryoidal crystal forms. Supplied in 2″ x 2″ size only, the samples will come in a card tray with an information label.

Add to cart
Fluorescent Calcite Rhomb £4.00 ex VAT
Calcite rhombs are the massive forms of calcite crystals, exhibiting the rhombic (cubic) crystal nature excellently. These mineral specimens from Morocco also display excellent fluorescent properties, while viewed under natural lighting, they rhombs are a pale off white colour, however, when viewed under short wave UV lighting, they fluoresce an extraordinary, vivid pink and red colour, the complete opposite of what you would expect. Supplied as 2″ x 2″ pieces in a card tray with a data label.

Add to cart
Sold Out

Fluorescent Cerussite £3.80 ex VAT
Fluorescent cerussite specimens from Mibladen, Morocco. The samples are a perfect addition to any mineral collection and come supplied in a 1.5″ x 1.5″ white card tray with an information label.

Read more

Out of stock
Fluorescent Chalcedony Nodule £4.00 ex VAT
Specimens of Fluorescent Chalcedony Nodules, collected from Morocco. This mineral belongs to the quartz family and is very similar to carnelian, even having a waxy lustre, although it tends to have a botryoidal crystal habit. These particular samples are fluorescent under shortwave UV light and display a bright orange/yellow colouration. They range from 1.5 – 2 inches approximately and come in a white card tray with an information label.

Add to cart
Fluorescent Chiastolite £4.00 ex VAT
Specimens of Fluorescent Chiastolite, collected from Cumbria, UK. These specimens are of Chiastolite Slate and display white chiastolite crystals within a rock matrix. Chiastolite is a variation of the mineral andalusite. Under exposure to shortwave UV light, these chiastolite crystals fluoresce a white colour. These specimens measure 2 – 3″ approximately and will feature several randomly orientated chiastolite crystals within a matrix. Specimens come in a white card tray with an information label.

Add to cart
Fluorescent Fluorite £20.00 ex VAT
Specimens of Fluorescent Fluorite collected from Weardale, Co. Durham in the UK. Fluorite (also known as fluorspar) crystal beds from the famous British locality, Weardale in County Durham, UK. It is a popular mineral specimen for many, children, teachers, collectors etc, it often forms with a cubic crystal habit with the crystals being a variety of colours and sizes from deep rich purples, vibrant greens, calming yellows and sometimes crystal clear. These particular samples of fluorite crystals on matrix are vary with any of the mentioned colours. They also display excellent fluorescence, with the crystals turning bright purple – lilac under a UV light. Specimens measure between 3 – 5 inches and come in a white card tray with information label.

Add to cart

29 in stock
Fluorescent Lapis Lazuli £3.00 ex VAT
Specimens of Fluorescent Lapis Lazuli, collected from Afghanistan. Lapis lazuli is a metamorphic rock which contains high amounts of the mineral lazurite, which gives the rock a rich blue colour. These specimens display excellent fluoresence, turning a bright yellow orange colour when exposed to shortwave UV light. These specimens are small, approximately 1 – 1.5″ in size. They come in a white card tray with an information label.

Add to cart
Fluorescent Mangano Calcite £4.00 ex VAT
Specimens of Fluorescent Mangano Calcite, in tumblestone form. Mangano calcite is a pink variation of calcite, due to the prescence of manganese. These specimens display excellent fluorescence, turning a bright orange when presented with shortwave UV light. These tumblestones may also display visible banding. These specimens measure between 1 – 2″ approximately and come in a white card tray with an information label.

Add to cart

25 in stock
Fluorescent Travertine £4.00 ex VAT
Specimens of Fluorescent Travertine, collected from Yorkshire, UK. Travertine is a sedimentary rock and type of limestone which forms by the rapid precipitation of calcium carbonate, often at the margins of a hot spring or in limestone caves. When presented with shortwave UV light, these specimens fluoresce a pale yellow to bright white in colour. These specimens measure approximately 2 inches in size and come in a white card tray with an information label.

Add to cart
Fluorite – Morocco £4.00 – £10.00 ex VAT
Fluorite mineral specimens found in Morocco, a common mineral, used in various manufacturing process today. Exhibiting various colours, ranging from hues of green, purple and clear. The samples are massive crystalline with cubic crystals present as well. Available in two sizes, supplied in a card tray with a label.

Select options
Fluorite – Weardale £2.00 – £8.00 ex VAT
Fluorite crystal beds on a matrix from the famous Weardale locality in County Durham, UK, specimens exhibit a range of colours from rich greens, to deep purples, calming yellows and crystal clear samples, available in a variety of sizes. These mineral specimens are ideal for collectors, children and educational use, supplied in a card tray with a data label.

Select options
Fluorite (Massive) – Finland £2.25 – £3.50 ex VAT
Fluorite, also known as fluorspar, is a captivating mineral that commonly forms in hydrothermal veins, often associated with various other minerals such as quartz, calcite, and sphalerite. Fluorite exhibits a remarkable range of colours, including purple, green, blue, yellow, and even colourless varieties. This diversity arises from the presence of trace elements and exposure to various environmental conditions during its formation. Whilst fluorite crystallises in the cubic system, these specimens are of a ‘massive’ nature. They are from Finland and come supplied in a white card tray with information label. Available in two colours: Green and Purple, and two sizes.

Select options
Fluorite Beds – Derbyshire £2.25 – £6.00 ex VAT
2" x 2"3" x 2"4" x 3"
Fluorite (also known as fluorspar) crystal beds with galena collected from Ashover, Derbyshire. Fluorite is a popular mineral specimen for many, children, teachers, collectors etc, it often forms with a cubic crystal habit with the crystals being a variety of colours and sizes from deep rich purples, vibrant greens, calming yellows and sometimes crystal clear. These particular fluorite crystals on matrix vary with any of the mentioned colours above. Some specimens exhibit well developed galena crystals along with the fluorite however it can be less obvious in others. We supply 2″ x 2″, 3″ x 2″ and 4″ x 3″ specimens; each in a card tray with an information label.

Select options
Fluorite Display Piece – 1 £20.00 ex VAT
A beautiful fluorite crystal bed display piece, collected from Ashover, Derbyshire. Fluorite (also known as fluorspar) is a popular mineral specimen. It often forms with a cubic crystal habit with the crystals being a variety of colours and sizes from deep rich purples, vibrant greens, calming yellows and sometimes crystal clear. This particular display piece features clear – yellowish crystals on matrix. The specimen measures approximately 13 x 12 x 3 cm at its widest and longest points and weighs just over 1000 grams. Due to the valuable and fragile nature of our display specimens, they will be shipped via courier only. Supplied with a plastic display stand and information label.

Add to cart

1 in stock
Fluorite Group – Coldstones £1.50 – £5.00 ex VAT
Specimens of fluorite groups from Coldstones Quarry, Harrogate, North Yorkshire, UK. These specimens are clear in colour but are somewhat translucent due to mineral impurities. These pieces are supplied in a white card tray with an information label.

Select options
Fluorite Octahedron – China £1.50 – £2.50 ex VAT
Fluorite octahedrons, these crystals specimens display in excellent quality another variation of the minerals, fluorites crystal habits, the octahedron. The crystals each have exactly 8 faces, hence the octahedron name. During formation, if the crystals have four perfect cleavage planes, octahedral shapes are produced. These particular samples come from China, each one is slightly translucent, letting though partial light and they all vary slightly in colour through various shades of green, purple and clear. It is important to note that these crystals, are genuine fluorite, they have been broken down, using the minerals own habit into the octahedron form. We offer them in two sizes small and large with each coming in a polythene bag with a label.

Small: Approximately 1 – 1.5cm

Large: 2+ cm

All measurements taken at the widest points

Select options
Fluorite Octahedron – Illinois £1.50 – £2.50 ex VAT
Fluorite octahedron crystals of varying colours from Illinois, USA. These individual crystals are available in various sizes and have been cleaved into these octahedron shapes which is done due to the fluorite minerals points of cleavage which allows it to ‘break’ in four directions. Despite this, they still exhibit, excellent, almost gem quality clarity with very minor inclusions. Such crystals from Illinois are now difficult to come by these days as the fluorspar mines in the areas have long since ceased operations, causing supply of crystals to be exhausted. The crystals are available in various colours, chosen at random. Available in three different sizes, they come supplied in a white card tray with information label.

Small: Approximately 1cm in length

Large: Approximately 2cm in length

All measurements taken at the widest points

Select options

5 in stock
-10%Limited

Fossil Wood Slide £18.00 ex VAT
Microscope thin section slides of fossil wood from Madagascar, these slides display the structure of the petrified wood on a microscopic level which assists in the identification of similar slide samples. The glass is 46 x 27 mm in size, supplied in a protective card sleeve with a label, ideal for microscopy & educational use.

Add to cart

7 in stock
Fossiliferous Limestone Varves – USA £2.25 – £6.00 ex VAT
Specimens of Fossiliferous Limestone Varves, collected from Wyoming, USA. Varves are alternating sedimentary sequences, associated with lacustrine deposits and seasonal cycles of temperature changes. These specimens display faint varves (lighter and darker bands) down the edges of each piece. These specimens may also contain partial fish remains and are an example of Lagerstätten. This is a German term that refers to a sedimentary layer with unusual occurrences of fossils that have undergone relatively high grade preservation. These specimens are Eocene in age and part of the Green River formation. Specimens are available in multiple sizes and come in a white card tray with an information label.

Select options
Fossiliferous Sandstone – Gloucestershire £2.25 – £6.00 ex VAT
Rare fossiliferous sandstone from the Llandovery group of the May Hill sandstone, Gloucestershire, UK. HIstorically used as an indicative marker of the upper Llandovery group (upper Silurian), this specimen is of great geological importance, which exhibits fossils of corals and brachiapods. Each specimen comes supplied with a card tray and information label.

Select options
-10%LimitedSold Out

Fossiliferous Shale Slide £18.00 ex VAT
Fossiliferous shale microscope slide showing thin black lenses of organic matter ( in XPL view ) which fell from suspension in very low energy environments.The section is made to 30 microns thickness and the glass is 46 x 27 mm in size with a cover slip. Supplied in a protective card sleeve with a label, ideal for microscopy.

Read more

Out of stock
Frosterley Marble £2.25 – £6.00 ex VAT
Specimens of Frosterley Marble, collected from Harewood Quarry, Co. Durham in the UK. Frosterley Marble is not actually a marble, but rather a black limestone consisting of Carboniferous age fossil corals. This makes it a sedimentary rock. The most famous use of Frosterley Marble is in Durham Cathedral where the ceiling of the Ceiling of the Chapel of Nine Altars has slender column supports composed from this stone. These specimens are available in multiple sizes and come supplied in a white card tray with an information label.

Select options

60 in stock
Sold Out

Frosterley Marble (1kg) £8.00 ex VAT
Frosterley Marble is not a marble but a black limestone containing fossil coral specimens of Carboniferous age. The specimens are from Harewood quarry, Co. Durham, supplied by weight in lots of 1 kilogram.

Read more

Out of stock
Fuchsite in Quartz £1.50 ex VAT
Specimens of Fuchsite in Quartz, collected from Norway. These specimens are small, available in a 1.5″ x 1.5″ size, and come in a white card tray with an information label.

Select options
Fulgurite (Lightning Stone) £1.50 ex VAT
Fulgerite mineral specimens from Algeria, formed from lightening strikes which pieces the desert sands instantly melting and fusing the quartz crystals creating a light weight hollow piece of rock.

Add to cart
Gabbro £2.25 – £6.00 ex VAT
Gabbro igneous rock specimens from Balmedie quarry, Aberdeen, Scotland which exhibit a coars grained texture from the crystals. Formed as a mafic pluton intrusion, the samples contain pyroxenes such as augite along side plagioclase feldspar, amphibole and olivine crystals. They are derived from a body known as the Belhelvie basic intrusion which the parent unit being the Caledonian Supersuite. Samples exhibit a grey colouration and density and are suitable for the more serious or professional collector or higher educational use to differentiate similar looking igneous rocks with different compositions and origins. Available in three sizes, the specimens come supplied in a card tray with an information label.

We also supply Gabbro thin sections for microscope study which are available to buy HERE.

Select options

27 in stock
Gabbro (1kg) £8.00 ex VAT
Classic Gabbro specimens, showing typical coarse grained crystalline texture. Gabbro is an intrusive mafic igneous rock chemically similar to basalt.

Add to cart

41 in stock
Gabbro Big Feldspar £2.25 – £6.00 ex VAT
Hand size specimens of the big feldspar variant of gabbro, samples were collected from Carrock fell, Cumbria, UK and can be supplied in 3 sizes.

We also supply Gabbro Big Feldspar thin sections for microscope study which are available to buy HERE.

Select options

66 in stock
-10%Limited

Gabbro Big Feldspar Slide £18.00 ex VAT
Big feldspar gabbro thin section exhibiting exactly what its name describes, feldspar crystals much larger than those present in the ordinary gabbro which we supply. Characteristic twinning in the plagioclase and the bright colours of the pyroxene make for an attractive thin section, perfect for educational use.

We provide a full range of igneous, sedimentary, metamorphic and mineral thin sections. Click here to view them. Should you require a microscope, they can be found here.

Add to cart

7 in stock
-10%LimitedSold Out

Gabbro Iceland Slide £18.00 ex VAT
Gabbro thin section exhibiting some of the textbook features one would expect from this coarse, mafic igneous rock. This material comes from Iceland. The glass is 46 x 27 mm in size, supplied in a protective card sleeve with a label, ideal for microscopy, petrology & educational use.

Read more

Out of stock
-10%LimitedSold Out

Gabbro Slide £18.00 ex VAT
Gabbro thin section exhibiting some of the textbook features one would expect from this coarse, mafic igneous rock. These slides supplement the hand specimens nicely and are useful for interpreting the crystalisation history of the rock.

We provide a full range of igneous, sedimentary, metamorphic and mineral thin sections. Click here to view them. Should you require a microscope, they can be found here.

Read more

Out of stock
Gabbro With Magnetite And Ilmenite – Cumbria £2.25 – £6.00 ex VAT
Specimens of gabbro from Carrock Fell, Cumbria, UK which contain trace amounts of magnetite and ilmenite. Specimens are supplied in labelled card trays.

Select options

53 in stock
Galena – Ladywash Mine £3.50 – £13.00 ex VAT
Specimens of Galena with a high level of purity, collectd from Ladywash Mine, Eyam, Derbyshire, UK. Galena is a very important mineral, being the primary ore of lead. It is very dense and specimens exhibit metallic (shiny) lustre. These specimens are available in multiple sizes and come in a white card tray with an information label.

Select options
Galena and Baryte (1kg) £7.00 ex VAT
Specimens of Galena and Baryte, collected from Morocco. Both galena and baryte are two common minerals, which often come together and form as mineral veins in other rocks. Both galena and baryte are dense minerals, with galena being a prominent lead ore. These specimens come in lots of 1kg, in a heavy duty polythene bag. Pieces are of various sizes. NOT SUITABLE FOR CHILDREN UNDER 12 YEARS OLD.

Add to cart

47 in stock
Sold Out

Galena and Strontianite – Scotland £2.25 – £6.00 ex VAT
Galena and Strontianite – a lead or and strontium carbonate respectively – are present in this matrix from Orkney, Scotland, UK. The metallic blue veins of the galena can be seen running throughout these specimens, which are available in a number of sizes and provided with a white card tray and information label.

Select options

Out of stock
Galena with Baryte £1.50 – £2.25 ex VAT
Galena with massive baryte from Morocco, showing the two contrasting colours of the off white baryte and metallic blue galena mineral specimens together, both are quite dense yet extremely fragile, these samples were collected from Morocco and available in 3 sizes.

Select options
Sold Out

Ganister £2.25 – £3.50 ex VAT
Ganister is a hard, fine grained , silica cemented sandstone. It is commonly, although not exclusively, found as seat earths below Carboniferous Coal Measure deposits & hence may contain root fossils. The name Ganister seems to have arisen in Yorkshire & Derbyshire where it was the local miners’ & quarrymens’ name for roadstone. It was particularly important around Sheffield where it was mined extensively to be used as a refractory liner for coke ovens & furnaces for the steel industry. Sheffield Ganister or Blue Ganister became the type example for this lithology. These particular specimens come from County Durham. They are supplied in labelled card trays.

Select options

Out of stock
Garnet Amphibolite £1.70 – £6.00 ex VAT
Garnet Amphibolite supplied in a card tray with a label. This attractive rock from southern Norway has highly prominent garnet porphyroblasts (also known as cherry cake).

Select options

4 in stock
Sold Out

Garnet Amphibolite (1kg) £8.00 ex VAT
Specimens of Garnet Amphibolite, collected from Southern Norway. Amphibolite is a metamorphic rock, consisting mainly of amphibole minerals (hornblende and actinolite). These rocks also include highly prominent garnet porphyroblasts. Specimens come in lots of 1kg, in a heavy duty polythene bag. Pieces come in various sizes.

Read more

Out of stock
Garnet Mica Schist £2.25 – £6.00 ex VAT
Garnet mica schist from Loch Tay, Scotland, showing in excellent detail the effects of regional metamorphism along plate boundaries, the garnets push the mica crystals around it due to being stronger, the specimens are available in various sizes or as a cut and lacquered piece, supplied in a card tray with a data label.

Select options

46 in stock
Garnet Mica Schist – Fauske £3.30 – £5.60 ex VAT
Garnet Mica Schist from Fauske, Norway, displaying the details of regional metamorphism adjascent to a plate boundary. The garnet crystals stand out and protrude from the micaceous matrix. Specimens available in 2 sizes, and come supplied with a card tray and information label.

Select options

60 in stock
Garnet Mica Schist (1kg) £8.00 ex VAT
Garnet Mica Schist . The specimen is mostly muscovite mica schist with a scattering of small pink or red garnets. Collected from Scotland. Supplied by weight, pieces come as they are in various shapes and sizes up to the weight of 1 kilogram. Packed in a polythene bag with an information label.

Add to cart

15 in stock
-10%Limited

Garnet Mica Schist Slide £18.00 ex VAT
Garnet Mica Schist thin section exhibiting textbook strain fabric and alignment of platy minerals within this popular metamorphic rock.This schist is from the Dalradian series, a complicated group of various metamorphic rocks which are dated to the Pre-Cambrian period and is present in both Scotland and Ireland.

Add to cart

6 in stock
Garnet Peridotite £3.45 – £9.20 ex VAT
Garnet peridotite igneous rock specimens found in the Gusdal Olivine Pit, Åheim, Norway is an ultra mafic rock which contains high pressure and temperature minerals such as olivine and garnet crystals. Exhibiting a green colouraiton with striking red spots, these samples were pushed up to the earths crust during the Caledonian orogeny during the Ordovician and Devonian period over 400 million years ago. The specimens are dense as expected and are ideal for children and serious collectors because of the colourful appearance as well as for higher educational use to describe deep mantle material as well as orogenic processes. The hand samples are available in various sizes and come supplied in a card tray with an information label.

We also supply Garnet Peridotite thin sections for microscope study which are available to buy HERE.

Select options

168 in stock
-10%Limited

Garnet Peridotite Slide £18.00 ex VAT
Stunning garnet peridotite thin section exhibiting the bright and beautiful colours of olivine and pyroxene in XPL view punctuated by opaque garnets. Peridotite is a dense, coarse grained, ultramafic igneous rock consisting largely of olivine and pyroxene.

Add to cart

5 in stock
Garnets – India £1.50 ex VAT
Specimens of small almandine garnets found in India. These specimens are supplied in a small white card tray with an information label. The specimens are approximately 1″ – 1.5″ cm in diameter though this will vary slightly.

Add to cart

18 in stock
Garnets in Biotite £2.25 – £6.00 ex VAT
Specimens of Garnets in Biotite, collected from Agder, Norway. The garnets in these pieces are almandine garnets, which are the most popular and common variety. These specimens exhibit deep red garnet crystals within a matrix of black biotite mica. They are available in multiple sizes and come in a white card tray with an information label.

Select options
Gastropods – Morocco £3.00 – £9.00 ex VAT
• Geological Age: Cretaceous period, 145 to 65 million years ago.
• Location: Morocco
• Family: Gastrpod
• Species: Unknown – Sea Snail

High quality gastropod fossil shells from the Cretaceous period, collected from Morocco, these specimens exhibit excellent morphological detail, the shell shape and coil are seen clearly, samples are 10 mm in size and supplied in optional weights and will come in a bag with a label.

Select options
Glacial Clay £1.50 – £2.25 ex VAT
Specimens of recent glacial clay (boulder clay till) from Beetham, Cumbria, UK. Specimens are perfect for education but may also be ideal for any British rock collectors. Pieces are supplied in a white card tray with an information label.

Select options

10 in stock
Glaucophane Schist £3.50 – £7.00 ex VAT
Glaucophane Schist is also known as Blueschist. The blue-green colour comes from the dominant presence of the minerals Glaucophane (amphibole) & Lawsonite (related to epidote). These specimens were collected from the Isle of Anglesey, North Wales.

We also supply Glaucophane Schist thin sections for microscope study which are available to buy HERE.

Select options

26 in stock
Sold Out

Glaucophane Schist (1kg) £12.00 ex VAT
Specimens of Glaucophane Schist, collected from the Isle of Anglesey, North Wales. Glaucophane Schist is a Blueschist, which forms when basalts and similar rocks undergo high pressure and low temperature metamorphism. Specimens come in lots of 1kg, in a heavy duty polythene bag. Pieces come in various sizes.

Read more

Out of stock
-10%Limited

Glaucophane Schist Slide £18.00 ex VAT
Glaucophane Schist thin section microscope slide exhibiting a clear fabric and a wonderful blue hue under plane polarised light. This material was collected from the Isle of Anglesey, North Wales. Each section is made to 30 microns thickness and the glass is 46 x 27 mm, ideal for microscopy and educational purposes.

Add to cart

6 in stock
Gneiss – Lewisian £3.45 – £7.00 ex VAT
Lewisian gneiss from Northwest Scotland, formed during the Pre-Cambrian period, making it among the oldest rocks in the UK, pushed to the surface during an oregenic event, Lewisian gneiss exhibits banded like most gneisses but is comprised of more dark, dense minerals, often igneous in origin. Specimens are available in 3 different sizes.

Select options
Gneiss – Norway £2.25 – £6.00 ex VAT
Gneiss from Evje, Norway, containing more feldspar and quartz than Lewisian gneiss from Scotland, giving it a pink colour, these specimens show excellent banding and text book crystal structure, supplied in 3 sizes, ideal for educational use.

We also supply Gneiss thin sections for microscope study which are available to buy HERE.

Select options

94 in stock
Sold Out

Gneiss – Scotland (1kg) £8.00 ex VAT
Lewisian Gneiss; Pre- Cambrian metamorphic rocks that outcrop in the North West of Scotland. Formed by high grade regional metamorphism of granites & sedimentary rocks. Supplied in lots of 1 kg.

Read more

Out of stock
-10%Limited

Gneiss Slide £18.00 ex VAT
Norwegian gneiss thin section slide exhibiting a dominant felsic composition i.e. quartz and plagioclase with less prominent mafic bands. We collected this material from Evje, Norway. Each section is made to 30 microns thickness and the glass is 46 x 27 mm, ideal for microscopy and educational purposes.

Add to cart

12 in stock
Goethite £1.50 – £2.25 ex VAT
Goethite mineral specimens from Morocco, the samples exhibit a black colouration with a high metallic lustre and a botryoidal formation, which makes the surface of the specimens appear ‘bubbly’. Excellent quality pieces with text book features suitable for collectors and schools, supplied in a card tray with a label.

Select options

150 in stock
Goethite on Quartz £1.50 – £2.00 ex VAT
Beautiful acicular geothite crystals on fragments on Quartz, collected from Amerzgane, Ouarzazate, Morocco. These black needle like goethite crystals are of excellent quality and contrast beautifully against the lustrous white or smokey quartz. The opposing colours make these specimens all the more interesting to observe and the geode acts as natural protection for the fragile goethite crystals. Available in various sizes and supplied in a card tray with a label.

Select options

120 in stock
Sold Out

Goniatites – Morocco £2.00 – £12.00 ex VAT
• Geological Age: Late Devonian period, 372 – 358 million years old
• Location: Alnif, Morocco
• Species: Various species.

Various goniatite fossil specimens from Alnif, Morocco, supplied by weight with various options available, these hematite stained red fossils show clear suture lines, chambers and coils, they are supplied in whole and partial pieces varying between 10 to 15 mm in size. Dated to the late Devonian period, 372.2 million years ago to 358.9 million years ago these fossils were found in what is now Alnif, Morocco, an area more known for it’s dessert and heat. However, during the late Devonian period, this area was submerged, being a marine environment, in which these various species of goniatites as well as other marine dwelling fauna lived.

Select options

Out of stock
Grammoceras sp – Somerset £2.00 ex VAT
Grammoceras is an extinct genus of Ammonite, which existed during the Jurassic period. Distinct due to their disc-like curved shell and distinct, thin ridges. These ammonite specimens are very well preserved, making them a perfect tool for analysis,while also providing the quality to become a display piece in fossil collections, particularly those geared towards UK marine fossils. These particular specimens are of an unknown species and were found in Illminster, Somerset, UK. They range from 1″ – 2″ and come provided with a white card tray and information label.

Add to cart

8 in stock
-10%Limited

Granite Adamellite Slide £18.00 ex VAT
Granite adamellite thin section slide exhibiting crystals of quartz, biotite and feldspar. We collected this material from the famous Shap Fell quarry, in Cumbria hence the rocks alternative name ‘ Shap Granite ‘.

We provide a full range of igneous, sedimentary, metamorphic and mineral thin sections. Click here to view them. Should you require a microscope, they can be found here.

Add to cart

8 in stock
Granodiorite – Cumbria £2.25 – £6.00 ex VAT
Granodiorite specimens from Cumbria, UK. These rocks originate from the Ordovician era, dating back roughly 443 to 448 million years. This Granodiorite, derived from Eskdale granite outcrops, exhibit a coarse-grained texture and represents a blend of granite and diorite characteristics.. While sharing mineral components like quartz, feldspar, and mica with granites, its distinctiveness lies in the elevated levels of plagioclase and mafic minerals like biotite, hornblende, and augite. Notably, this specific Granodiorite variety boasts a significant biotite content. Available in three different sizes, these specimens come supplied in a white card tray with information label.

We also supply Granodiorite thin sections for microscope study which are available to buy HERE.

Select options
-10%Limited

Granodiorite Slide £18.00 ex VAT
Granodiorite microscope thin section ideal for educational use. Granodiorite is a coarse grained igneous rock which represents a blend of granite and diorite characteristics. While sharing quartz, feldspar, and mica with granites, it also features elevated levels of plagioclase, biotite, hornblende, and augite. These rocks originate from the Ordovician era, dating back 443 to 448 million years and were collected from Cumbria, UK. The section is made to 30 microns thickness and the glass is 46 x 27 mm in size with a cover slip. Supplied in a protective card sleeve with a label, ideal for microscopy.

Add to cart

12 in stock
Graphic Granite £2.25 – £6.00 ex VAT
Graphic granite is an igneous pegmatite rock from Iveland, Norway, which forms in intrusive batholithic bodies that have a felsic composition. As such, the rock is mainly composed of quartz and orthoclase feldspar crystals and lacks any mica, making the rock leucocratic. These samples have what is known as a graphic texture, due to the formation of the crystals, which result in an appearance similar to that of cuneiform text which was once used by ancient human cultures. A brightly coloured, eye catching rock, the samples are suitable for collectors and educational use at higher levels and come available in three sizes. Each specimens is supplied in a card tray with an information label.

Select options

90 in stock
Graphic Granite (1kg) £8.00 ex VAT
Graphic Granite is a leucocratic igneous rock found predominantly in granitic pegmatites. It’s coarse intergrowths of feldspars display a Runic or Cuneiform configuration hence the term “graphic”

Add to cart

98 in stock
Graphite £3.00 – £12.00 ex VAT
Graphite mineral specimens from China, well known in the modern day as the ‘lead’ in pencils due to its non toxic chemical composition, these samples of graphite are soft, exhibit a metallic lustre, dull grey colouration and waxy/greasy texture. Available in various sizes they come in card trays with a label.

Select options
Graphite – Cumbria £2.25 – £9.50 ex VAT
Graphite, a rare variety of the carbon mineral from Seathwaite a small hamlet in Borrowdale, Cumbria, UK where the material was once mined. Samples are supplied in a small range of sizes with each piece supplied in a small card tray with an information label.

Select options
Graphitic Schist £2.25 – £6.00 ex VAT
Samples of graphitic schist from the Pre-Cambrian Dalradian formation, making them among the oldest rocks in the country. The samples come from the Ben Eagach schist formation at Foss mine, Scotland, UK and were collected by our own members of staff. The rock contains mica and graphite, which gives the specimens their unique mica appearance and greasy graphitic texture and lustre.

Select options

67 in stock
Sold Out

Graptolite £1.00 ex VAT
Specimens of various Graptolites, low grade. Sizes of the fossils vary and are supplied in a small card tray with a label.

Read more

Out of stock
Green Aventurine £2.25 – £6.00 ex VAT
Green aventurine mineral specimens from Brazil bearing a vibrant chrome green colour and crystalline texture expected of quartz minerals, the presence of platy minerals also gives them a glittering effect when viewed in light. These specimens are excellent additions to collections or as teaching aids, supplied in a card tray with a data label.

Select options
Green Garnets Display Piece – 1 £37.50 ex VAT
A unique display piece of Green Garnets, collected from Afghanistan. This specimen is a massive freeform of green grossular garnets that has undergone cutting and polishing. This piece measures approximately 14 x 7 x 6cm at its widest and longest points. It weighs around 1050 grams and is capable of standing freely. Due to the valuable and delicate nature of our display pieces, it will be shipped via courier only. Supplied with an information label.

Add to cart

1 in stock
Greenschist £2.25 – £6.00 ex VAT
Greenschist metamorphic rock specimens from Scotland, exhibiting excellent schistose texture and folliation and a deep green colouration due to the presence of chlorite and serpentine. Specimens are available in various sizes and supplied in a card tray with a data label.

We also supply Greenschist thin sections for microscope study which are available to buy HERE.

Select options

57 in stock
-10%Limited

Greenschist Slide £18.00 ex VAT
Greenschist thin section microscope slides from North Wales exhibiting the minerals that give this rock its green colouration, serpentine and chlorite. The thin sections also display platy minerals such as muscovite mica. Each section is made to 30 microns thickness and the glass is 46 x 27 mm, ideal for microscopy and educational purposes.

Add to cart

7 in stock
Greisen £2.25 – £6.00 ex VAT
Greisen metamorphic rock specimens from Caldbeck Fells, Cumbria, composed mainly of quartz and mica with an off yellow colouration. The rock is known as an endoskarn and forms when hydrothermal fluid and heat alter a granitic body, resulting a heavily altered rock which may contain trace amounts of rare elements. These samples are suitable for advanced collectors and higher level education and are available in three sizes, each pieces will come supplied in a card tray with a label.

We also supply Greisen thin sections for microscope study which are available to buy HERE.

Select options

18 in stock
Greisen (1kg) £8.00 ex VAT
Specimens of Greisen, collected from Cumbria, UK. Greisen is a form a granitic rock or pegmatite that has undergone alteration. Greisen is a medium to coarse grained crystalline rock that is yellow to pale brown in colour. Specimens come in lots of 1kg, in a heavy duty polythene bag. Pieces come in various sizes.

Add to cart
-10%Limited

Greisen Slide £18.00 ex VAT
Greisen microscope thin section ideal for educational use. Greisen is a metamorphic rock, with specimens collected Caldbeck Fells, Cumbria, composed mainly of quartz and mica. Greisen is part of a group of rocks known as endoskarn. This process occurs when a granitic pluton releases heat and hydrothermal fluids as a later stage which results in a process known as greisenisation, altering the pre-existing granite already in place. The section is made to 30 microns thickness and the glass is 46 x 27 mm in size with a cover slip. Supplied in a protective card sleeve with a label, ideal for microscopy.

Add to cart

14 in stock
Greywacke £2.25 – £6.00 ex VAT
Specimens of Greywacke, collected from around Moffat, in Soctland. Greywacke is a type of dark, hard, grey or brown sandstone. It typically displays poor sorting with angular grains of quartz, feldspar & lithic fragments set in a very fine matrix. Greywacke is a turbidite, meaning it forms via deposition from sediment laden currents that move very rapidly downslope through water. These are fairly typical of the margins of continental shelves. These rocks are Silurian in age. Specimens are available in multiple sizes and come in a white card tray with an information label.

We also supply Greywacke thin sections for microscope study which are available to buy HERE.

Select options

30 in stock
Greywacke (1kg) £8.00 ex VAT
Greywacke, a hard, grey, poorly sorted sandstone of Silurian age. Available by weight in lots of 1 kilogram.

Add to cart

Information

Categories

Weekly Newsletter