Article: Petzite: Bald Mountain, Sonora, Tuolumne County, California.(Connoisseur's)

Only a few of the relatively small number of minerals that contain gold as a major component, other than native gold itself, occur in relative local abundance or as strikingly spectacular specimens. Most collectors are, however, somewhat familiar with the common tellurides sylvanite and calaverite and perhaps a few others in this general family. One of the most widespread gold tellurides is petzite, a mineral significantly underrepresented in most collections. A drab gray petzite specimen or two can usually be found in the stocks of rare-mineral dealers, but only occasionally is one of great beauty discovered. Such an exceptional petzite specimen was offered by Cal Graeber ...

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