Capgaronnite

A variety of Minerals

Capgaronnite specimen - rock identification

What is Capgaronnite?

Capgaronnite (HgS•Ag(Cl,Br,I)) is a mineral that forms small tufted aggregates or isolated crystals with a maximum width of 0.02mm and a maximum length of 0.1mm. This mineral is related to perroudite in chemical composition and crystal structure. Capgaronnite is associated with secondary minerals of Cu like olivenite, cyanotrichite, and tennantite.

Capgaronnite Market Value Calculator

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Capgaronnite Localities Map

See where Capgaronnite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

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Key Characteristics

Formation of Capgaronnite

Capgaronnite is a rare mineral that was observed in the Cap-Garonne copper-lead mine of Var, France. Capgaronnite is found in cavities of Triassic Conglomerate (geology) and Sandstone.

Quick Facts

Physical Properties

Color
Black, gray, greenish, yellow
Density
6.19 g/cm³
Streak
Gray-black

Chemical Properties

Chemical Formula
AgHgClS Cl may be replaced by minor Br and I.
Elements
Ag, Cl, Hg, S
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