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Formula: CuPbTlAs2S5
Sulphosalt, sulpharsenite,
thallium-bearing mineral
Specific gravity: 5.71 calculated
Colour: Lead-grey
Environments
Localities
At the type locality, the Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland, wallisite is found
overgrowing other lead sulfosalts, in association with
dufrénoysite, rathite and
pyrite
(HOM).
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