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
Pyrolusite
at
Ryan Prospect (Ryan Bartholf & Veach; You Bet; Midway Claim; Negro Heaven Claim; Bluebird Claim), You Bet (Chalk Bluffs), You Bet District, Nevada Co., California, USA