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Specimens of molybdenite in a feldspar matrix from Buskerud in Southern Norway. Molybdenum disulfide (MoS2) otherwise known as Molybdenite is the primary ore of the rare earth metal Molybdenum. This element rarely occurs in pure form in nature and it is from minerals like molybdenite that it can be extracted. The mineral is often formed in hydrothermal veins. In recent years it has become an important factor of alloy production, particularly that of steel and stainless steel. The mineral is similar to Graphite, both in lustre and habit – molybdenite also leaves behind residue when touched (although this is harmless). This interesting property is a result of the molecular structure of the mineral, in which one molybdenum atom is sandwiched between two sulphur atoms, which is repeated in layers, allowing the individual layers to move over each other in the same way a conveyor would. Samples are supplied in a white card tray with an information label. A must have addition to any mineral collection.
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Specimens of molybdenite in a feldspar matrix from Buskerud in Southern Norway. Molybdenum disulfide (MoS2) otherwise known as Molybdenite is the primary ore of the rare earth metal Molybdenum. This element rarely occurs in pure form in nature and it is from minerals like molybdenite that it can be extracted. The mineral is often formed in hydrothermal veins. In recent years it has become an important factor of alloy production, particularly that of steel and stainless steel. The mineral is similar to Graphite, both in lustre and habit – molybdenite also leaves behind residue when touched (although this is harmless). This interesting property is a result of the molecular structure of the mineral, in which one molybdenum atom is sandwiched between two sulphur atoms, which is repeated in layers, allowing the individual layers to move over each other in the same way a conveyor would. Samples are supplied in a white card tray with an information label.
Weight | 50 g |
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Specimen Size | 1" Sized Piece |
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Pyrite in massive form, from Folldal, Norway. Collected by staff, these crystalline textured mineral specimens exhibit a metallic lustre, brassy colouration and shine when viewed under certain lighting conditions. The iron ore is dense and solid, but can break fairly easily, occurrences of chalocpyrite may also be seen in some pieces. These samples are available in various sizes and come supplied in a card tray with a label, ideal for educational use, children and collections.
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.
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.
Rhodolite garnets in quartz and mica schist matrix from Southern Norway exhibiting bright vibrant pink coloured garnets in a white quartz and metallic grey mica schist with a start contrast of colours, these minerals specimens are available in 3 sizes and come supplied in a card tray with a label.
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.
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
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
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
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
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.
432 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.
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.
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.
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