Specific gravity: 5.56 calculated
Hardness: 3 to 3½
Colour: Light grey
At the type locality, the Golden Giant mine, Hemlo gold deposit, Bomby Township, Thunder Bay District, Ontario, Canada, vaughanite is a very rare primary mineral found in a drill core from a low temperature hydrothermal gold deposit. Associated minerals include pääkkönenite, stibarsen, realgar, arsenic, chalcostibite, quartz and calcite (HOM, AM 75.710, http://rruff.info/rruff_1.0/uploads/MM53_79.pdf).
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