Minerals from the NJZC Eagle Mine in Gilman, Eagle County, Colorado USA from the collection of Mr. John R. Helms (1922-2009).
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Rhodochrosite: Eagle Mine, Gilman, Eagle County, Colorado USA
Pyrite:Eagle Mine, Gilman, Eagle County, Colorado USA
Pyrite: Eagle Mine, Gilman, Eagle County, Colorado USA
Freibergite, Tetrahedrite, Chalcopyrite: Eagle Mine, Gilman, Colorado USA
Dolomite, Pyrite: Eagle Mine, Gilman, Eagle County, Colorado USA
Rhodochrosite on Sphalerite: Eagle Mine, Gilman, Eagle County, Colorado USA