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Anhydrite is a anhydrous calcium sulfate. It is in the orthorhombic crystal system, with three directions of perfect cleavage parallel to the three planes of symmetry. The hardness is 3.5 and the specific gravity 2.9. The colour is white, sometimes greyish, bluish, or purple.
Anhydrite, Cumbria, UKACTUAL AS SEEN: The image shows the EXACT specimen you will receive. The specimen has been carefully hand selected and photographed. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. Once this specimen is sold, we will update this listing with new similar selected item, with a new photo and dimensions.