'celestite' can also refer to...


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Mineral SrSO4 which may form a solid solution series with barite; sp. gr. 3.9–4.0; hardness 3.0–3.5; orthorhombic; faint blue to colourless, sometimes stained red; white streak; vitreous lustre; crystals normally very tabular, resembling barite, but can also occur fibrous and granular; cleavage perfect basal {001}, present {210}, {010}; often fluorescent; occurs in sedimentary rocks, particularly dolomites, as a cavity-lining in association with barite, gypsum, anhydrite, and halite, with gypsum and anhydrite in evaporite deposits, also as a gangue mineral in hydrothermal veins with galena and sphalerite, and it will form concretionary masses in clays and marls. It is the main ore mineral for strontium and strontium compounds.

Subjects: Earth Sciences and Geography.

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