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Fluorescent cerussite specimens from Mibladen, Morocco. The samples are a perfect addition to any mineral collection and come supplied in a 1.5″ x 1.5″ white card tray with an information label.
Out of stock
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Fluorescent cerussite specimens from Mibladen, Morocco. Cerussite is a lead carbonate mineral and lead ore, the name was derived from the word ‘cerussa’, Latin, which was used by miners’ during the 1800’s and means lead-spar or white lead ore, an allusion to its dense weight and white colouration. Under good conditions, cerussite will often form good orthorhombic crystals, similar to that of aragonite. It typically has a conchoidal fracture and is 3 to 3.75 on the Moh’s scale,meaning it is quite soft and can even be scratch with a penny. These particular pieces of cerussite fluoresce a pale yellow colour under shortwave UV light, this makes them ideal for educational use. The samples are a perfect addition to any mineral collection and come supplied in a 1.5″ x 1.5″ white card tray with an information label.
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Fluorescent amber from Sarawak, Borneo, these mineral and fossil specimens are found in the ancient coal measures around Indonesia, a variation known as glessite, this amber is from the Tertiary period, 15 to 25 million years old and is much harder than Baltic amber. It has a distinct brown colour but once under shortwave UV lighting, emits a pale green/yellow colour with some inclusions of blue. Available in one size only, 1.5 x 1.5″, supplied in a card tray with a label.
Out of stock
Calcite rhombs are the massive forms of calcite crystals, exhibiting the rhombic (cubic) crystal nature excellently. These mineral specimens from Morocco also display excellent fluorescent properties, while viewed under natural lighting, they rhombs are a pale off white colour, however, when viewed under short wave UV lighting, they fluoresce an extraordinary, vivid pink and red colour, the complete opposite of what you would expect. Supplied as 2″ x 2″ pieces in a card tray with a data label.
Cerussite crystal beds, a well sought after mineral specimen due to the clean, clear crystals and their rarity. The crystals typically have an orthorhombic habit and is found along side the cockscomb mass variation of baryte,making for a dense specimens. We have various sizes in stock and specimens come from Mibladen, Morocco.
Pyrite on Rhaetic Bone Bed collected from Westbury-on-Severn, Gloucestershire. Of our specimens it is the pyrite crystal bed which is the key feature, some specimens may exhibit bones or scales but naturally this is no guarantee
9 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.
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.
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.
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
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.
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
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.
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.
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.
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
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
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