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Crazy Sphinx Mine, Helena, Helena District (Spring Hill District), Lewis and Clark Co., Montana, USA Helena Mineral Society

Regular Meeting

Third Thursday
of every month

Neighborhood Center
200 Cruse Avenue

Meeting begins at
7:00 p.m.

Newsletters and Meeting Minutes

2017



2016



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Philipsburgite : (Cu,Zn)6[(OH)3|(AsO4,PO4)]2 路 H2O
 

Specializing in
Family Fun & Recreation ~ Education ~ Outdoors Activities ~ Minerals

Helena Mineral Society
PO Box 736
Helena, MT 59624