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PRODUCTS BY WEIGHT
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PLASTIC DISPLAY PRODUCTS
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Cobaltoan dolomite from the Kamoto mine in the Democratic Republic of Congo, Africa, well known for it’s striking pink colouration, this variation of the mineral, dolomite is quite rare, with only 5 known localities in the world. Specimens are available in various sizes and come in a card tray with a label. Exhibits excellent crystal beds with vibrant colours on a limestone matrix.
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Cobaltoan dolomite is a rare variant of dolomite containing cobalt. As such, it has an extremely vibrant pink colour to the crystals. While regular dolomite is fairly common, this cobalt variation is very limited and found in only 5 countries in the world. These particular specimens come from the Kamoto mine in the Democratic Republic of Congo (Zaire) Africa. While the crystals are fairly small and so lack any major shape or structure, they exhibit the extreme pink colouration which it is widely sought after for and are on a limestone matrix. Dolomites are a calcium magnesium carbonate mineral, similar to limestones, however, the crystals instead have slightly curved faces when formed under the perfect conditions as opposed to calcites, these specimens are rare so we only have limited stock. Available in various sizes, the minerals will come supplied in a card tray with an information label.
Weight | 210 g |
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Specimen Size | 1.5" x 1.5", 3" x 2", 3" x 3", 4" x 3", 5" x 3.5" |
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Dolomite crystal beds, pink in colour form Morocco, the presence of manganese results in a pale pink hue, these mineral specimens also have larger crystals than the UK material and are higher quality. Available in various optional sizes, supplied in tray with a data label.
50 in stock
Dolostone or dolomite rock is a sedimentary carbonate rock that contains a high percentage of the mineral dolomite, CaMg(CO3)2. Most dolostones formed as a magnesium replacement of limestone or lime mud prior to lithification. It is resistant to erosion & less soluble than limestone in weakly acidic groundwater. Technically, dolostone has a stoichiometric ratio (reaction & product ratio) of nearly equal amounts of magnesium and calcium. This particular example comes from the Clitheroe area of Lancashire. Specimens are supplied in labelled card trays.
Out of stock
White dolomite crystal beds from the Pallieres Mine, Languedoc in France, the mineral specimens exhibit bright white dolomite crystals exhibting curved crystal faces and habit on a dark grey matrix with excellent contrast of colours. available in optional sizes, supplied in a tray with a data label.
Brown dolomite mineral specimens exhibit curved face dolomite crystals on massive dolomite matrix collected from Cumbria, the colouration is due to hematite staining from nearby former iron mine workings. High quality mineral specimens from the UK available in various sizes.
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.
Moss Agate mineral specimens from India, deep green in colour due to the presence of chrome and iron mineral impurities, this chalcedony mineral breaks with a conchoidal fracture, has a glassy texture and can have sharp edges, caution is advised. Available in various sizes, this well known mineral has been used in the past as a gemstone as it takes a high polish, natural specimens, they will come supplied in a card tray with an information label.
Chalcopyrite mineral specimens from Sulitjelma, Norway, a major copper ore mineral, these pieces exhibit excellent quality chalcopyrite detailing the shiny brassy yellow colouration and metallic lustre expected. These mineral specimens are approximately 70% – 80% chalcopyrite and are available in various sizes and come supplied in card tray with an information label.
Specimens of Salt Pseudomorphs on a limy matrix, collected from the Triassic Aust Cliff in Avon, UK. Salt Pseudomorphs serve as important inicators of paleoenvironmental conditions. They typically form in semi arid (dry) climates, where saline water evaporates, which leaves behind cubic salt crystals. These salt crystals later dissolve, occasionally preserving their cubic imprints These specimens are available in multiple sizes and come supplied in a white card tray with an information label.
20 in stock
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.
gypsum satin spar with an orange colouration, found in Morocco, these mineral specimens exhibit excellent fibrous texture and a silky lustre, along with the unusual orange colour, makes these particular samples very sought after simply just for their unique appearance. Available in 2″ x 2″ size pieces only and supplied in a card tray with a 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
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.
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
Native copper ore mineral specimens from the famous Keweenaw copper deposits of Mitchigan, U.S.A. The specimens have a heavy red-orange metallic specimens with streaks of blue-green oxidation and a wiry crystal habit. Available in a range of sizes.
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
Desert rose mineral specimens composed from gypsum found in Tunisia, the samples are composed of numerous crystals which resemble ‘petals’ which are randomly orientated, thus giving them a rose flower effect. Specimens are supplied in a 1.5″ x 1.5″ card tray or as approximately 1 cm diameter pieces in 1″ magnifier boxes with an information label.
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