Geology Superstore
Geology Superstore


Anhydrite mineral specimens exhibiting a soft hardness and crystalline texture, the pieces vary in colour between pale grey and white and were collected from Cumbria, they are available in 3 sizes and come supplied in a card tray with a label. An evaporite mineral, it is closely related to other such mineral including gypsum, halite,calcite and others.

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Anhydrite mineral specimens found in Cumbria, the specimens are a pale grey or sometimes white colour with a crystalline nature, however, the mineral its self as a whole tends to be quite soft. Anhydrite is a soft, anhydrous form of calcium sulphate, considered an evaporite mineral that occurs in extensive layered deposits in sedimentary basins where large volumes of sea water have been evaporated, it is typically interbedded with halite (salt), gypsum and limestone in accumulations that can be up to hundreds of feet. Initially discovered in a salt mine near Hall in Tirol, Aistria in 1794. Depth is critical to anhydrites stability and formation, if it were to form or become exposed nearer the surface the mineral becomes hydrated with water and reverts to gypsum. It is at times used as a substitute mineral during the manufacture of plaster of Paris. These mineral specimens are available in various sizes and will come supplied in a white card tray with an information label.

Weight 180 g
Specimen Size

2" x 2", 3" x 2", 4" x 3"

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SKU: MIN-012 Category:
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