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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Quartz from
Eagle Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Chalcopyrite35
Galenobismutite28
Tetrahedrite Subgroup26
Matildite20
Arsenopyrite17
Ankerite12
Rhodochrosite5
Sphalerite5
- var Marmatite1
Baryte4
Pyrite4
Siderite4
Freibergite Subgroup3
Beegerite2
Galena1
Data
Mineral Data:Click here to view Quartz 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
Data Identifiers
Mindat Occurrence Record ID:34890
Long-form Identifier:1:3:34890:0
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.8km (0.5 miles) ⓘBen Butler Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
3.4km (2.1 miles) ⓘWyoming Mine, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
21.6km (13.4 miles) ⓘRobinson Mine (Robinson No. 2), Kokomo-Tenmile area, Summit County, Colorado, USA
22.7km (14.1 miles) ⓘFulford, Fulford Mining District, Eagle County, Colorado, USA
23.0km (14.3 miles) ⓘChalk Mountain Occurrence, Alicante, Lake County, Colorado, USA
23.4km (14.6 miles) ⓘChalk Mountain, Summit County, Colorado, USA
23.6km (14.7 miles) ⓘCrystal Lode pegmatite, Fulford Mining District, Eagle County, Colorado, USA
24.7km (15.4 miles) ⓘBoss Mine (1), North Rock Creek Area, Summit County, Colorado, USA
25.1km (15.6 miles) ⓘMcNulty Gulch, Kokomo-Tenmile area, Summit County, Colorado, USA
25.7km (16.0 miles) ⓘFremont Pass, Lake 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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