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
Calcite
at
Crown Point Consolidated Quartz Mine (Crown Point Mine; Crown Point Con. Qtz.; Confidence; Wm Penn; William Penn), Empire Star Group (Empire Star Mines Company Holdings), Grass Valley, Grass Valley District, Nevada Co., California, USA