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    Accretionary Lapilli Tuff

    Accretionary lapilli tuff is an igneous pyroclastic rock, these samples come from Longsleddle, Cumbria in the UK and forms when hot ash and debris is ejected from as volcano. Some of this material is held together by moisture and once heavy enough, falls into the ash below forming small ‘spots’ within the material, creating a speckled rock. The samples are suitable both for young and serious collectors as well as educational use and are supplied in various sizes with a card tray and label.

    69 in stock

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    Aeolian Sandstone £1.73 – £3.68 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    A Triassic red millet seed sandstone of aeolian (wind blown) desert origin.

    200 in stock

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    Agglomerate £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"

    Agglomerate igneous rock specimens from Scotland, UK. A coarse grained, hard blocky rock exhibiting a conglomeration of various minerals and igneous material of volcanic origin. These samples formed part of the Glen Coe caldera and are apart of the upper streaky andesite unit, the exhibit poor sorting and orientation of material which indicates a somewhat violent origin but this can vary from agglomerates by location and is mainly down to the chemistry of the igneous material. The samples are available in 3 sizes and come supplied in a card tray with a label, they are suitable for educational use to show the different types of volcanic rocks produced as well as those interested in collecting rock samples.

    84 in stock

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    Amygdaloidal Basalt

    Amygdaloidal basalt is an igneous rock which is extrusive in nature, these specimens formed over 60 million years ago during the Tertiary period and come from Ireland. They are part of the Antrim lava group and exhibit a dark colouration with occurrences of amygdales containing quartz and calcite crystals. As a basalt they are somewhat dense, but lighter than pure samples due to the cavities within them which formed as a result of gaseous activity during their ejection. Over time, hydrothermal fluids pass through the rock and minerals form within the cavities, which gives the usually dark coloured rock a speckled appearance. These samples are available in various sizes and are suitable for higher educational use to detail the subtle differences between similar igneous rocks, they come supplied in a card tray with an information label.

    73 in stock

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    Amygdaloidal Basalt with Epidote

    Amygdaloidal basalt, showing instead, gas vesicles (bubbles) with epidote crystals as opposed to the usual quartz and calcites normally expected. Specimens come from the Isle of Skye and are available in various sizes, each rock will come in a card tray with an information label.

    Out of stock

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    Amygdaloidal Lava With Chlorite Amygdales (Trap Rock) – Germany

    Specimens of amygdaloidal lava with chlorite amygdales (trap rock) found in Idar-Oberstein, Germany. Specimens are supplied in a white card tray with a information label.

    27 in stock

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    Andesite

    Andesite igneous rock specimens of late Ordovician age which form part of the Barrowdale volcanic group. The rocks come from Cumbria, UK and have a dark colouration with a blue tint and may contain augite crystals. The rocks are intermediate in chemistry and suitable for higher level education to explain the difference in various igneous groups. Samples are available in 3 sizes and will come supplied in a card tray with an information label.

    53 in stock

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    Anorthosite £1.73 – £5.18 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Anorthosite phaneratic igneous rock specimens of Protozoic age from the Rogaland province in Norway. The samples have an almost pure white colouration due to an abundance of plagioclase feldspar which comprises of most of the rock and exhibit a coarse grain size with visible with the naked eye and exhibiting a low density. The samples are suitable for the more serious or professional collector as well as higher level educational use and are available in three sizes and supplied in a card tray with a label.

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    Anyolite – Tanzania £2.00 – £3.00 ex VAT
    Specimen Size
    1.5" Mag Box1" Mag Box

    Specimens of the rock anyolite comprised of the minerals zoisite, corundum var. ruby and pargasite from Mundarara Mine, Arusha Region, Tanzania. Specimens are supplied in a magnifier box and come with an information label.

    Please note that the size of the ruby within the rock varies between specimens.

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    Augen Gneiss £1.15 – £3.46 ex VAT
    Specimen Size
    2"x 2"3" x 2"4" x 3"

    Augen Gneiss is a foliated metamorphic rock with large crystals of lenticular or eliptical shear bound microcline.

    Out of stock

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    Augite Andesite £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Augite andesite igneous rock specimens from Thirlmere, Cumbria, UK which are of late Ordovician age which form part of the Barrowdale volcanic group. The samples are of intermediate composition and contain phenocrysts of the pyroxene mineral, augite, giving the normally dark blue rock a black speckled appearance. The samples are available in 3 sizes and come supplied in a card tray with a label.

    100 in stock

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    Augite Granophyre

    Augite granophyre igneous rock specimens from Carrockfell, Keswick in Cumbria, UK. Excellent pieces exhibiting a medium grain size of crystals which constitute this rock including, augite, quartz and feldspars and shows a granophyric texture. Suitable for avid collectors and higher educational use, the samples come supplied in a sized card tray with an information label.

    89 in stock

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    Banded Tuff £2.62 ex VAT
    Specimen Size
    3" x 2"

    Banded tuff rock specimens from Cumbria, UK. An extrusive igneous rock with a felsic chemistry and rhyolitic texture, the specimen exhibit a pink colouration due to the presence of feldspar as well as banded formations. Available in various sizes and supplied in a card tray with a label.

    Out of stock

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    Basalt £1.38 ex VAT
    Specimen Size
    2" x 2"

    Basalt igneous rock specimens from, Ireland, which formed during the Tertiary period approximately 60 million years ago. A dense, fine crystalline, dark coloured rock which forms at extrusive igneous bodies and contains olivine alongside with various pyroxene minerals such as augite along with plagioclase as well. The samples are available in 3 sizes and come supplied in a white card specimen tray with a label. Being so common and an important igneous rock, it is suitable for educational use as they are one of the introductory and staple rocks that students are often shown when entering earth sciences.

    42 in stock

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    Basalt with Augite crystals

    These particular samples of basalt contain augite crystals and depending on which surface you look at on the samples you will be able to see the monoclinic prismatic structure of the augites which tend to be a very dark green or blue colour. The specimens come from Norway and are supplied in a white card tray with a label

    Out of stock

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    Bauxite

    Bauxite is a brown or red earthy sedimentary rock and primary ore for aluminium, these mineral specimens come from Antrim, Northern Ireland and are of textbook quality, they are available in various sizes to choose from and will come supplied in a card tray with a data label.

    300 in stock

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    Biotite Gneiss – Norway

    Biotite gneiss is a metamorphic rock found in Evje, Norway. These specimens exhibit alternating bands of black and white minerals, derived from quartz, plagioclase feldspar and biotite mica. Giving a surreal appearance, similar to the stripes of a zebra. The samples are available in various sizes and comes supplied in a card tray with a label.

    78 in stock

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    Biotite Granite £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Biotite granite igneous rock specimens from Ballachulish, Scotland, UK. Composed of the felsic minerals quartz and feldspar, with occurrences of biotite crystals. The rock has an overall white appearance due to its felsic chemistry but the black biotite mica offers a striking contrast in colours. The samples are ideal for both collectors due to the attractive nature and for college to university level education to describe the variations in granite which one may find. The samples are available in three sizes and supplied in a card tray with an information label.

    75 in stock

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    Biotite Granite (polished) £1.38 – £5.29 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Biotite granite from Spain exhibiting plagioclase feldspar, quartz and biotite mica, specimens have been cut and polished on one surface allowing easy viewing of the crystals without the aid of magnification.

    Out of stock

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    Biotite Muscovite Granite

    Biotite muscovite granite specimens from St. Austell in Cornwall, UK of Permian age is a coarse grained igneous rock composed of quartz, plagioclase feldspar, biotite and muscovite. The rock is part of the St. Austell pluton which formed 280 million years ago. An off white colour with gold and black flecks of micas, the rock has a unique chemistry and resulted in the rich mineralisation of ores in the area. The samples are suitable for collectors and educational use to show granite variants, available in three sizes. Each piece will come supplied in a card tray with an information label.

    81 in stock

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    Boulder Clay £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Boulder clay from Yorkshire, UK from the Pleistocene period, shows random sized various clasts within a glacial clay matrix. Formed through various glacial or ice sheet processes, these sedimentary rocks are available in various sizes.

    15 in stock

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    Breccia (Calcrete) £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    This Breccia is a calcrete cemented scree deposit of Pleistocene age from the Manifold Valley in Staffordshire.

    40 in stock

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    Breccia (recent) £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Recent Breccia from the Holoceneperiod, found in Yorkshire supplied in 2″ X 2″, 3″x2, 4″x3″ card trays with labels.

    40 in stock

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    Brecciated Hematite

    Specimens of brecciated hematite found in Cumbria, UK. Specimens are supplied in a white card tray and come with an information label.

    Out of stock

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    Bytownite Basalt £1.73 – £3.98 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Bytownite basalt is another variation of the common Basalt rock. These particular samples come from Cumbria and are available in a range of sizes.

    200 in stock

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    Cannel Coal £1.73 – £3.68 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Cannel coal by it’s physical morphology and low mineral content is considered to be coal but by its texture & organic matter content it is considered to be oil shale. Although historically the term cannel coal has been used interchangeably.

    200 in stock

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    Cannonball Limestone

    This is a rare & unusual rock, part of the highly studied Zechstein Formation. It is a concretionary Magnesium Limestone of Permian age, supplied in a 1.5″ x 1.5″ magnification box.

    14 in stock

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    Chalk

    Chalk is a fine, porous, white form of limestone of Cretaceous age. Formed from the accumulation of coccoliths in a relatively deep marine environment.

    300 in stock

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    Chalk (Red) £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Red chalk is early Cretaceous in age. It is chemically very similar to the later & better known white chalk.

    70 in stock

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    Chert

    Carboniferous Chert found in Lancashire supplied in a card tray with label.

    Out of stock

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    Chert – Foss Mine £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Specimens of chert found in Foss mine, Scotland, UK. Specimens are supplied in a white card tray with an information label.

    Out of stock

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    Chiastolite Slate £1.73 – £3.68 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Chistolite slate is a variation of slate which also contains chiastolite crystals within it,the slate its self is either a brick red or plum colour with the chiastolite crystals appearing as white lines and randomly orientated within the rock matrix. rock specimens are available in various sizes and will be supplied in a labelled card tray.

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    Coal – Anthracite £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Anthracite coal specimens, a vitreous, high grade coal with a hard and compact nature, these samples are from the Carboniferous coalfields of South Wales, UK and are one of the coals which have fewer impurities and a high carbon contents. Available in optional sizes, each sample will come supplied in a card tray with a label.

    200 in stock

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    Coal (Bituminous) £1.38 – £2.62 ex VAT
    Specimen Size
    2" x 2"3" x 2"

    Bituminous coal is a soft sedimentary rock with a high organic content & the tar-like substance Bitumen. It is of a lower grade than Anthracite but higher grade than Lignite.

    23 in stock

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    Conglomerate – Farringdon £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Conglomerate with well rounded clasts from Faringdon, UK. A good example of the lithotype as opposed to a Breccia which would contain predominantly angular to sub-angular clasts.

    200 in stock

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    Conglomerate With Siderite Pebbles £3.50 ex VAT

    Specimens of conglomerate with siderite pebbles found in Wigan, Lancashire, UK and formed in the Carboniferous period. Specimens are supplied in 4″ x 3″ labelled card trays.

    Out of stock

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    Connemara Marble £1.73 – £2.88 ex VAT
    Specimen Size
    2" x 2"3" x 2"

    A rare, green marble dating back some 700 million years to the end of the Pre-Cambrian. This marble comes from the Streamstown quarry in Clifden, Co. Galway. Specimens ( max size 3″ x 2″) are supplied in a labelled card tray.

    Out of stock

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    Coral Limestone £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Carboniferous coral limestone from Anglesey, North Wales. Composed largely of well preserved Lithostrotion corals

    50 in stock

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    Cordierite Hornfels

    This variation of Hornfels exhibits strong banding with small crystals of Cordierite.The samples were collected from near Carrock Fell. Cumbria, UK. .

    41 in stock

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    Cretaceous Sandstone £1.73 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Cretaceous sandstone rock specimens from the Wealden group found in Philpots quarry, west Hoathly, Sussex. This sedimentary rock is formed in estuarine conditions and exhibits quartz and mica crystals, commonly used as a popular building stone.

    50 in stock

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    Crinoidal Limestone

    Lower Carboniferous crinoidal limestone from Derbyshire, U.K.

    300 in stock

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    Diorite £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Diorite rock specimens from Cockermouth, Cumbria, is an intrusive igneous rock from the Ordovician period with a coarse, phaneratic texture composed of plagioclase feldspar, biotite mica as well as hornblende with intermediate chemistry. Found with the Skiddaw group, the rock samples are more suited for serious collectors and higher level education to describe the chemistry and mineralogy of various igneous groups. Available in 3 sizes and supplied in a card tray with an information label.

    55 in stock

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    Dolomite £1.38 – £2.62 ex VAT
    Specimen Size
    2" x 2"3" x 2"

    Dolomite or Dolostone is a carbonate rock composed primarily of the mineral Dolomite.

    Out of stock

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    Dunite £1.73 – £5.18 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    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.

    30 in stock

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    Eclogite £4.03 – £16.10 ex VAT
    Specimen Size
    1.5" x 1.5"2" x 2"3" x 2"4" x 3"

    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.

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    Eclogite – Scotland

    Eclogite is a rare metamorphic rock, these specimens come from Scotland and exhibit the two major minerals expected, red garnets and green omphacite. However, both minerals appear to be much darker in colour when compared to Norwegian material. Our stock of this is fairly low now, and only smaller size pieces are available, they will come supplied in a card tray with a data label.

    Out of stock

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    Essexite (olivine monzogabbro)

    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.

    64 in stock

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    Estuarine Sandstone £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    A fine grained sandstone formed in estuarine (river mouth) conditions, composed of fine quartz and mica.

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    Fault Breccia £2.62 – £4.19 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Specimens of fault breccia found in Great Langdale, Cumbria, UK. These specimens are fault breccia meaning that unlike other breccia they were formed by tectonic forces. Specimens are supplied in a white card tray with a information label.

    Out of stock

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    Flint (chert) £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    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.

    30 in stock

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    Fossiliferous Mudstone £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Fine grained, fissile sedimentary rock containing fossils such as bivalves, ammonites & belemnites from the Jurassic of Yorkshire, U.K.

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    Fossiliferous Sandstone £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Specimens of fossiliferous sandstone sourced from Rochdale, UK. However the type locality of this material is Scotland. Samples are supplied in various sizes and come supplied in a card tray with an information label. These specimens are perfect for educational use but the oddly appealing aesthetic the samples have means they would also make a great addition to any rock collection.

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    Fossils Preserved in Volcanic Ash £1.38 ex VAT
    Specimen Size
    2" x 2"

    Specimens of various species of fossil preserved primarily in volcanic ash, sourced from Berkeley, Gloucestershire, UK and dated to the Silurian, Llandovery series. Supplied in a white card tray with an information label.

    Out of stock

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    Frosterley Marble £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    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, and come supplied in a white card tray with an information label.

    60 in stock

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    Fuchsite – Brazil £1.59 – £2.38 ex VAT
    Specimen Size
    1.5" x 1.5"2" x 2"

    Fuchsite mineral specimens displaying a rich green colour due to the presence of chromium. These mineral samples come from Brazil and are supplied in a white card tray with an information label.

    Out of stock

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    Gabbro £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    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.

    47 in stock

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    Gabbro Big Feldspar £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    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.

    76 in stock

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    Gabbro Troctolite £1.38 ex VAT

    A variation of gabbro, Troctolite consists of olivine and plagioclase along with small amounts of pyroxene. It is a coarsed grained rock and are supplied in a 2″ x 2″ white card tray.

    Out of stock

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    Gabbro with Tourmaline and Pyrite (Scotland) £1.38 – £6.90 ex VAT