Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by
mindat.org
There are no ages for
Quartz
at
Grass Ravine And Workman Mine (Grass Ravine; Grass Ravine Vein), Gold Hill, Ophir District (Auburn District; Duncan Hill District), Placer Co., California, USA