Overite

phosphate

crandallite

Formula: CaMgAl(PO4)2(OH).4H2O hydrated phosphate with hydroxyl, overite group
Specific gravity: 2.53
Hardness: 3½ to 4
Streak: White
Colour: Light apple-green to colourless; colourless in transmitted light
Solubility: Readily soluble in hot nitric acid
Environments:

Pegmatites
Hydrothermal environments

Overite is a secondary phosphate mineral found in altered phosphate nodules in sediments and in granitic pegmatites. At the type locality, Clay Canyon, Utah, USA, it is associated with crandallite and apatite.

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