Guettardite

guettardite

semseyite

zinkenite

sartorite

Images

Formula: Pb₈(Sb_0.56As_0.44)₁₆S₃₂
Sulpharsenite, sartorite group
Crystal System: Monoclinic
Specific gravity: 5.29 calculated
Hardness: 4
Streak: Brownish
Colour: Greyish black
Common impurities: Cu
Environments:

Hydrothermal environments

Guettardite is of low-temperature hydrothermal origin, in marble (Webmin).

Localities

At the type locality, the Taylor Pit, Huntingdon Township, Madoc area, Hastings County, Ontario, Canada, guettardite occurs in a low temperature hydrothermal vein in marble (Mindat). Associated minerals include pyrite, sphalerite, wurtzite, galena, stibnite, orpiment, realgar, enargite, tetrahedrite, zinkenite, jordanite, bournonite, sterryite, boulangerite, jamesonite and sartorite (HOM).

At Seravezza, Lucca Province, Tuscany, Italy, guettardite is of low-temperature hydrothermal origin, in marble (HOM).

At Silverton, Animas Mining District, San Juan county, Colorado, USA, guettardite is associated with zinkenite, boulangerite, semseyite, jordanite and enargite (HOM).

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