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PRODUCTS BY WEIGHT
BOX SETS
PLASTIC DISPLAY PRODUCTS
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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.
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Epidote crystal sheaths from Madagascar, exhibiting a deep rich green colouration and the expected vitreous lustre when viewed from certain angles of light. This mineral specimen exhibits the high quality aspects of epidote such as the prismatic crystals and green to black colour. Clusters such as this are sometimes known as ‘fans’ and it is easy to see why. The mineral was named in 1801 by René Just Haüy, a prominent French mineralogist and founder of the Musée de Minéralogie in Paris, France. The name is derived from the Greek word Epidosis, which mean “increase” in reference to the crystal characteristic of one longer side at the base of the prism. Excellent mineral specimens with a radiating crystal habit, ideal for serious collectors or educational establishments. Supplied in a white card tray according to the size of the specimen.
Weight | 100 g |
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Specimen Size | 1.5" x 1.5", 3" x 2", 4" x 3" |
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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.
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.
Out of stock
Epidote and quartz crystals on a matrix collected from Imichil, Er Rachidia, Morocco, these mineral specimens exhibit a rich grass green colouration mixed with the transparency of quartz tips, breaking up the colours. The crystal habit shows a typical radiating sheath form, making the pieces suitable for both collectors and educational use. Available in various sizes, the samples will come supplied in a card tray with a label.
Out of stock
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.
Apatite crystals found in Morocco with a green hue and a semi transparent appearance. These crystals very from 0.5 – 1.5cm and come supplied in a pack of 5 pieces. Specimens are supplied in a small polythene bag with a information label. Apatite is a phosphate mineral that has a vitreous lustre and a white streak but do not show good terminations. Its primary use is in the manufacture of fertiliser due it being a source of phosphorus. Apatite comes in a wide variety of colours and crystal habits, these samples are green in colour with a prismatic crystal habit. Supplied in a polythene bag with an information label.
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
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
Orthocalse feldspar mineral specimens from Evje, Norway. It exhibits a pale pink, white or pale grey colouration with excellent cleavage planes with rhombic crystal forms, a common mineral found in granites and rhyolites, orthoclase belongs to the feldspar family of minerals and can be found all over the world. Specimens are available in various sizes and come supplied in a card tray with an information label.
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.
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.
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.
Specular Hematite, also known as specularite is a variation of haematite which has a silver or black colouration and metallic lustre which gives the crystals a sparkling appearance. These particular specimens are of specularite crystals with an anhedral form on a massive haematite matrix. These specimens display veins of specularite within a matrix of massive haematite. They come from Cumbria, UK and are available in various sizes, each sample comes supplied in a card tray with an information label. They would be of particular interest to those who are particular keen on collecting British mineral specimens.
Baryte mineral specimens, unusual samples collected from Foss mine in Scotland, they have a fine crystalline texture instead and are quite robust specimens. Pieces are off white in colour and may show a shimmer effect in certain lighting conditions. Available in various sizes, supplied in a card tray with an information label.
29 in stock
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.
Cut ulexite mineral specimens from California, USA. A mineral similar to gypsum, ulexite is able to transmit light through its long axis, meaning if placed above an image or text, will transmit it to the samples surface as an image. Hence the name TV rock, excellent for children, these pieces are available in several sizes and will come supplied in a card tray with an information label.
Halite mineral specimens from the Boulby mine in Redcar, North Yorkshire, UK. Halite is a salt mineral and has a cubic crystal system and vitreous lustre, these specimens are rough and available in various sizes, suitable for educational use, supplied in a card tray with a label.
30 in stock
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