sylvanite
noun
syl·van·ite
variants:
or less commonly silvanite \ ˈsilvəˌnīt \
plural -s
Definition of sylvanite
: a mineral (Au,Ag)Te2 consisting of a gold silver telluride, having a steel gray, silver white, or brass yellow color, and often occurring in implanted crystals resembling written characters (hardness 1.5–2 specific gravity 7.9–8.3)
— called also graphic tellurium
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