Specific gravity: 6.03
Streak: Grey on paper, reddish brown on porcelain
Colour: Light steel-grey to silver-white, tarnishes yellow
Common impurities: Cu,Fe
Owyheeite occurs in veins of hydrothermal origin, associated with galena,
ramdohrite, andorite and
At the type locality, the Poorman Mine, Silver City Mining District, Owyhee county, Idaho, USA, owyheeite was found in a white quartz vein immediately associated with small amounts of pyrargyrite, sphalerite and muscovite variety sericite (AM 6.82-83).
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