Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Freibergite Subgroup from
Eagle Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA


09321250017271923272480.jpg
Freibergite Subgroup, etc.

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
07382080017272012204984.jpg
Freibergite Subgroup

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
08433020017272012236397.jpg
Freibergite Subgroup

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
01178030017272012227849.jpg
Freibergite Subgroup, etc.

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
09321250017271923272480.jpg
Freibergite Subgroup, etc.

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
07382080017272012204984.jpg
Freibergite Subgroup

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
08433020017272012236397.jpg
Freibergite Subgroup

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
01178030017272012227849.jpg
Freibergite Subgroup, etc.

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
09321250017271923272480.jpg
Freibergite Subgroup, etc.

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
07382080017272012204984.jpg
Freibergite Subgroup

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
08433020017272012236397.jpg
Freibergite Subgroup

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
01178030017272012227849.jpg
Freibergite Subgroup, etc.

Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA
Locality type:Mine
Classification
Species:'Freibergite Subgroup' (not an IMA approved species)
Formula:(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Pyrite7
Chalcopyrite5
Siderite3
Quartz3
Sphalerite2
Dolomite1
Tetrahedrite Subgroup1
Data
Mineral Data:Click here to view Freibergite Subgroup data
Locality Data:Click here to view Eagle Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
Photo GalleryView Gallery (9 photos)
Data Identifiers
Mindat Occurrence Record ID:34854
Long-form Identifier:1:3:34854:8
GUID (UUID V4):0
Nearest other occurrences of Freibergite Subgroup
31.9km (19.8 miles) ⓘRussia Mine, Mount Lincoln, Alma Mining District, Park County, Colorado, USA
34.1km (21.2 miles) ⓘSweet Home Mine, Detroit City Claim Block, Mount Bross, Alma Mining District, Park County, Colorado, USA
40.3km (25.0 miles) ⓘHill Top Mine, Horseshoe Basin Mining District, Park County, Colorado, USA
45.6km (28.3 miles) ⓘOld Settler; Toledo Tunnel; Fisherman (Old Settler and Waterloo; Colorado and Toledo Tunnel), Montezuma Area, Summit County, Colorado, USA
50.5km (31.4 miles) ⓘCongress; Rothschild; Pennsylvania (Minerou Tunnel), Argentine Mining District, Summit County, Colorado, USA
52.2km (32.4 miles) ⓘMollie Gibson Mine, Aspen, Aspen Mining District (Roaring Fork Mining District), Pitkin County, Colorado, USA
60.9km (37.9 miles) ⓘGabanta, Georgetown District, Clear Creek County, Colorado, USA
74.5km (46.3 miles) ⓘAlmaden Mine, Fall River, Clear Creek County, Colorado, USA
74.9km (46.5 miles) ⓘBlazing Star tunnel, Lower Almaden Mine, Central City Mining District, Clear Creek County, Colorado, USA
References
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.pp.13-14
 
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