Weilerite

weilerite

adamite

mimetite

baryte

Images

Formula: BaAl3(SO4)(AsO4)(OH)6
Arsenate, beudantite group
Hardness: 5
Colour: White to yellow or green
Solubility: Scarcely attacked by nitric or hydrochloric acid, dissolved by hot sulphuric acid (AM 47.415)
Environments

Hydrothermal environments

Localities

At the type locality, the Michael mine, Weiler, Seelbach, Seelbach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany, weilerite occurs as a white earthy crust, associated with adamite and mimetite, on chert and baryte (AM 47.415).

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