autunite
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Definition
Autunite is a radioactive, hydrated calcium uranyl phosphate mineral with the chemical formula Ca(UO₂)₂(PO₄)₂·10-12H₂O. It typically forms tabular or platy crystals and is known for its bright yellow to greenish-yellow color and fluorescent properties under ultraviolet light. Autunite is a secondary mineral found in the oxidized zones of uranium deposits and is an important ore of uranium.
Synonyms
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uranite
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uranium mica
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calcium uranyl phosphate
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uranium phosphate
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uranium ore