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 Christopher Columbus Mine (Christopher Columbus Consolidated; Dana), Golden Gate Group (Golden Gate Gp; Kentucky & Alpha; Golden Gate; Golden Gate East And West; Dana Claim; Christopher Columbus Claim; Golden Gate Claim; Alpha Claim; Ismert Ranch Claim), Grass Valley, Grass Valley District, Nevada Co., California, USA