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
Sphalerite
at
Calumet & Hecla No. 21 Mine, Calumet & Hecla Mine, Calumet, Calumet Township, Houghton Co., Michigan, USA