Acanthite (Argentite)

Artifact (mineral) uoadl:141617 445 Read counter

Call number:
Sulfides
D5 (33)
Classification:
Sulfides
Name:
Acanthite (Argentite)
Translated title:
Acanthite (Argentite)
Place of origin:
Freiberg/Saxony, Germany
Depositional environment:
Low-temperature sulfide veins and in zones of secondary enrichment. Acanthite is the low-temperature modification of silver sulphide. All natural silver sulphide specimens at room temperature are acanthite. The structure of argentite, the high-temperature cubic (isometric) form cannot be quenched in. At atmospheric pressure, argentite is stable above 177°C and acanthite is stable below 177°C.
Description:
Low-temperature sulfide veins and in zones of secondary enrichment. Acanthite is the low-temperature modification of silver sulphide. All natural silver sulphide specimens at room temperature are acanthite. The structure of argentite, the high-temperature cubic (isometric) form cannot be quenched in. At atmospheric pressure, argentite is stable above 177°C and acanthite is stable below 177°C.
Chemical formula:
Ag2S
Crystal system:
Monoclinic
Crystal schema:
Prismatic

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