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Formula: TlPbAs5S9
Sulphosalt, sulpharsenite,
thallium-bearing mineral
Crystal System: Orthorhombic
Specific gravity: 4.6 measured
Hardness: 1½ to 2
Streak: Red
Colour: Scarlet-vermillion to deep cherry-red
Common impurities: Ag,Sb
Environments
Hutchinsonite is of hydrothermal origin. Associated minerals include orpiment,
realgar, getchellite,
pyrite, sphalerite,
hatchite, jentschite,
sicherite, edenharterite,
bernardite, stalderite,
erniggliite and chabournéite
(HOM).
Localities
At the type locality, the Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland, hutchinsonite occurs as very small crystals in
the white dolomite. Associated minerals include
sartorite, rathite and
dolomite
(Mindat).
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