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Formula: Na3Mg(PO4)(CO3)
Compound phosphate
Crystal System: Monoclinic
Specific gravity: 2.734 measured, 2.72 calculated
Hardness: 3 to 4
Streak: White
Colour: Light grey
Solubility: Slowly decomposed by cold water; readily soluble in dilute hydrochloric acid
Environments:
Bradleyite is a rare mineral in oil shale deposits of the Green River formation in Colorado, Wyoming and Utah, USA.
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