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
Venture, Horseshoe Basin Mining District, Park County, Colorado, USA


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Venture, Horseshoe Basin Mining District, Park County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:800694
Long-form Identifier:1:3:800694:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.2km (0.1 miles) ⓘNorth London Mine, London Mountain, Alma Mining District, Park County, Colorado, USA
0.3km (0.2 miles) ⓘOliver Twist Tunnel (Oliver Twist Shaft), Horseshoe Basin Mining District, Park County, Colorado, USA
0.8km (0.5 miles) ⓘNew York Mountain, Alma, Alma Mining District, Park County, Colorado, USA
1.4km (0.9 miles) ⓘSouth London Mine, Alma, Alma Mining District, Park County, Colorado, USA
2.1km (1.3 miles) ⓘMosher Shaft, Horseshoe Basin Mining District, Park County, Colorado, USA
2.2km (1.4 miles) ⓘLondon Extension Mine, London Mountain, Alma Mining District, Park County, Colorado, USA
2.5km (1.6 miles) ⓘHavighorst tunnel, Horseshoe Basin Mining District, Park County, Colorado, USA
2.6km (1.6 miles) ⓘLondon Mine, London Mountain, Alma Mining District, Park County, Colorado, USA
2.7km (1.7 miles) ⓘLondon Butte Mine (Butte Mine), London Mountain, Alma Mining District, Park County, Colorado, USA
2.9km (1.8 miles) ⓘLittle Newton, New York Mountain, Alma Mining District, Park County, Colorado, USA
References
Singewald, Quentin Dreyer
Butler, Bert Sylvenus (1941) Ore deposits in the vicinity of the London fault of Colorado. USGS Bulletin: 911
 
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