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PRODUCTS BY WEIGHT
BOX SETS
PLASTIC DISPLAY PRODUCTS
PRODUCTS BY WEIGHT
BOX SETS
PLASTIC DISPLAY PRODUCTS
£1.65 – £2.75 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.
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Goethite mineral specimens from Morocco, these samples have a black colouration as expected of this mineral as well as a high quality botryoidal crystal habit, where the surface of the samples appear like ‘bubbles’. Goethite is similar in chemical composition and structure to hematite except with a high metallic lustre, for this reason, the samples may look like they have been polished or sprayed with a coating but are completely natural. They will also give a deep dark red streak when used on a streak plate and is a little more denser than hematite. In the modern day, it is used as a source of iron ore, our samples are available in 3 optional sizes and comes supplied in a card tray with an information label.
Weight | 180 g |
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Specimen Size | 1.5" x 1.5", 2" x 2" |
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Hematite mineral specimens from Cumbria in the UK, showing partial botryoidal crystal habit and some fibrous habit. Despite this, the samples are text book examples, and exhibit a dense weight, deep red colouration and streak and a dull metallic lustre. Specimens are available in various sizes and come in a card tray with a label.
60 in stock
Massive specular hematite from Brazil, black colouration and metallic lustre which gives the crystals a sparkling appearance. These particular specimens are of specularite crystals in a massive form, therefore the samples have a highly crystalline texture. They come from Brazil and give off a metallic shimmer when held under certain lighting. Available in various sizes and supplied in card tray with an information label.
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.
120 in stock
Iron and manganese mix collected from the Lecht Iron Mines of Tomintoul, Aberdeenshire. Specimens are supplied in either a white card tray with an information label attached ( various sizes available ) or a small magnification box . Suitable for geologists, collectors or those imply interested in mineralogy.
Out of stock
Chalcopyrite mineral samples from Morocco, exhibiting typical yellow brassy colour with a metallic lustre. Lower grade when compared to our Norwegian stock but also includes occurrences of bornite which is a blue colour. Samples are available in 3 sizes, each supplied in a labelled card tray.
184 in stock
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.
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.
Chalcedony mineral specimens from Morocco, the pieces belong to the quartz family of minerals and is very similar to carnelian, even having a waxy lustre, although it tends to have a botryoidal crystal habit. The pieces are blue, white, red and orange and available in various sizes, supplied in a card tray with an information label.
Sulphur mineral specimens (also spelt sulfur) from Bolivia, these fine crystalline masses give off a pungent odour as expected of this mineral and have a pale yellow colouration to them. They formed in volcanic zones and are excellent for the more serious collector. Available in one size only and supplied in a card tray with a data label.
13 in stock
Milky quartz mineral specimens from Norway, with a pale white colouration, hence the name, sometimes also known as white quartz, snow quartz or simply quartz. These particular samples were collected by staff from Iveland, Norway. This locality is also where we collected the smokey quartz from. It is in a massive form and has a very fine crystalline texture, this also results in it sometimes being sharp, so caution is advised when handling these samples. It is available in various sizes and supplied in a card tray with an information label.
Cleavelandite is a variety of the mineral albite, one of the constituent minerals of plagioclase feldspar, thus is found in areas where pegmatites and granites exists in certain localities around the world. These particular specimens come from Evje, in Southern Norway and as expected, has a pale green colouration to it. As with albite, cleavelandite also exhibits a triclinic crystal habit and has a hardness of 6- 7 on the Moh’s scale of hardness, it is usually found within cavities of other rocks or minerals. It as named in 1823 by Henry J. Brooke in honor of Parker Cleaveland , professor of geology and mineralogy at Bowdoin College in Maine. Our mineral specimens are massive in form with occasional accessory such as smokey quartz or plagioclase or orthoclase feldspar. The specimens were collected by our own staff from Evje and are available in a range of sizes. Each specimen is supplied in a labelled card tray.
Baryte (also spelt barite) is a widely occurring mineral consisting of barium sulphate, they can occur with many crystal habits, in this case, these mineral specimens exhibit the cockscomb mass form, in which randomly orientated blades of the mineral occur on a massive bed. These particular specimens are a pink or orange colour with a pink bed but other colours of baryte exists, including white, buff or brown. Any barite specimen is incredibly dense, with small pieces even feeling heavier than they appear, which is surprising, considering it is a non metallic mineral. This density was how the mineral obtained its name, being derived from the Greek word ‘βάρυζ’ meaning heavy. It occurs in a range of environments and deposited via many processes including biogenic, hydrothermal and evaporation, among others. Commonly occurring in lead-zinc veins hence some of the samples contain galena (lead sulphide) as well. Over 75% of baryte extracted worldwide is used for weighting driling fluids in oil and gas exploration to control high formation pressures and prevent blowouts. These mineral specimens were mined in Mibladen, Morocco, they are available in various sizes, each specimen is supplied in a labelled card tray.
Iceland spar is a clear variation of calcite, it exhibits the rhombic crystal system of calcite perfectly, the crystals easily divide into rhombs, making them well sought after for a variety of reasons. Originally reported from Helgustadir Mine, Eskifjord, Iceland, hence its name. One of the most remarkable aspect of Iceland spar is its refractive properties. When light passes through one of the crystals, it is divided into two rays at different angles which results in a double refraction effect. Essentially, anything seen though the crystal is seen in double. This can best be seen if you place the calcite over some text, it will appear as if it has been printed twice. These mineral samples come from Santa Eulalia, Chihuahua, Mexico and are available in 2 sizes: Upto 1″ and Over 1″. They come in a card tray with an information label.
Tektite mineral specimens which were collected from Thailand, and have formed an irregular ‘tear drop’ shape. Each specimen measures 10 – 20mm approx in size. Radiometric dating gives an approximate age of 700,000 years old. Specimens are irregular in shape and are mainly black & opaque with a glassy lustre on fractured surfaces.
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.
18 in stock
Gypsum satin spar mineral specimens from Morocco, which are a pearly white colour composed of high quality fibrous crystals which are long and orientated in the same direction giving the samples a silky lustre. These pieces are available in various optional sizes, supplied in a card tray with a label.
434 in stock
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