Quadratite

quadradite

jordanite

lengenbachite

hatchite

Formula: AgCdAsS₃
Sulpharsenite, cadmium-bearing mineral
Crystal System: Tetragonal
Specific gravity: 5.31 calculated
Hardness: 3
Streak: Reddish brown
Colour: Grey, reddish grey
Environments

Hydrothermal environments

To date (February 2022) quadradite has been found only at the type locality.

Localities

At the type locality, the Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland, quadradite occurs in cavities in hydrothermally altered dolostone, likely formed at a late stage. Associated minerals include galena, dolomite, jordanite, pyrite, sphalerite, lengenbachite and hatchite (HOM, Mindat).

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