Mawbyite

minerals

bayldonite

duftite

hidalgoite

Formula: PbFe3+2(AsO4)2(OH)2
Arsenate
Specific gravity: 5.53 (calculated)
Hardness: 4
Streak: Orange-yellow
Colour: Orange-brown, red-brown
Environments:

Hydrothermal environments

The formation of mawbyite is probably related to the pH of circulating waters in the oxidation zone (Dana).

Localities

At Kintore, New South Wales, Australia, mawbyite occurs in the oxidised zone on spessartine quartz rocks in an arsenic-rich reaction halo associated with members of the corkite-beudantite series, adamite, olivine, duftite, mimetite, bayldonite, hidalgoite and pharmacosiderite.

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