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Beryl specimens which detail somewhat clear crystal habits, one can see that the specimens have a slight hexagonal prism shape, these specimens from Evje, Southern Norway are green to yellow in colour and are available in 3 sizes, supplied in a card tray with a label.
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Beryl is a mineral that has long been used as a gemstone for use in jewellery and ornaments. It is found mainily in granitic pegmatites, igneous rhyolite deposits as well as mica schists. Perfect exmaples will form with flat bases and an hexagonal crystal form. Usually, pure beryl is transparent and clear, however, most specimens have some form of colouration due to impurities. It is an associated mineral of tungsten and tin deposits often being found alongside or near them. Although many will know this mineral for its gemstone use, it is has a major industrial use as well, it is the main ore for beryllium and as such has a wide range of industrial use from mechanical objects to magnetics, nuclear properties and in the aerospace industry. these particular crystal specimens come from Evje, Southern Norway, they have a green to yellow colouration and lack any major lustre but do have a somewhat easily defined crystal habit. They are available in 3 sizes, supplied in a card tray with an information label.
Weight | 280 g |
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Specimen Size | 1.5" x 1.5", 2" x 2", 3" x 2" |
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This granite pegmatite contains large sheets of muscovite mica, orthoclase feldspar and quartz matrix. An excellent teaching material which comes from Southern Norway. Each specimen comes in a labelled card tray.
Out of stock
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.
59 in stock
Specimens of green apatite crystals found in Morocco. These samples are available in both small (approximately 1 – 1.5 cm) in which you receive 5 pieces and large (approximately 2 – 3.5 cm) size, where you will receive a single crystal, though their size will vary slightly. Specimens are supplied in a small polythene bag with a information label.
383 in stock
Rhyolite specimens found in Cumbria. Rhyolite is a felsic (silica rich) rock, often formed in highly explosive volcanoes. Specimens are supplied in a card tray with label.
76 in stock
Blue lace agate mineral specimens of moderate size which clearly exhibit alternating bands of blue and white, the specimens come from Botswana and are excellent grade with minimal matrix on them. Formed through volcanic processes and the deposition of silica compounds in igneous rocks, these minerals are both important educationally and calming to look at.
Out of stock
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.
6 in stock
Milky quartz mineral specimens from Iveland, Norway, collected by staff, these samples have a fine crystalline texture and are in a massive form. Translucent, they have a pale grey, milky white colour and are sometimes known as snow quartz or simply quartz. Available in 3 sizes and supplied in a card tray with a label.
100 in stock
These particular samples are a milky white to pale yellow colour and show typical fibrous crystal habit expected from Witherite. Samples are supplied in a white card 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
Salt Pseudomorphs on a limy marl matrix collected from the Triassic Aust Cliff in Avon. Numerous cubic imprints can be identified on the limy marl substrate of these specimens; they serve as interesting educational pieces.
20 in stock
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.
Out of stock
Baryte in cockscomb mass form exhibiting bladed crystals on a massive bed, these mineral specimens vary slightly in colour from orange and yellow to pink, they show excellent crystal detail, mined in Mibladen, Morocco, they are available in various sizes.
Magnesite mineral specimens from Greece, the samples are an off white colour and exhibit a somewhat botryoidal texture, formed around ultramafic rocks and metamorphic zones, these specimens are limited and will come supplied in a card tray with a data label.
Out of stock
Orthocalse feldspar mineral specimens from Strathpeffer, Ross-Shire, Scotland. It exhibits a very pale pink almost white colouration and details 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.
Out of stock
Bytownite basalt is another variation of the common Basalt rock. These particular samples come from Cumbria and are available in a range of sizes.
198 in stock
Baryte mineral specimens collected form Cumbria, exhibiting a bladed crystal habit or massive form, the dense specimens are an off white, yellow or brown colour due to staining from hematite (iron ore), available in various sizes, ideal for educational use.
Out of stock
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