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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Coloradoite from
Empress Mine & Post Boy Tunnel, Sugarloaf Mining District, Boulder County, Colorado, USA


Locality type:Tunnel
Classification
Species:Coloradoite
Formula:HgTe
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Coloradoite data
Locality Data:Click here to view Empress Mine & Post Boy Tunnel, Sugarloaf Mining District, Boulder County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:435649
Long-form Identifier:1:3:435649:3
GUID (UUID V4):0
Nearest other occurrences of Coloradoite
0.5km (0.3 miles) ⓘEmpress (Sylvan Ute), Boulder County Tungsten Mining District, Boulder County, Colorado, USA
1.1km (0.7 miles) ⓘKingston Mine, Boulder County, Colorado, USA
2.4km (1.5 miles) ⓘMountain Lion Mine - Keystone vein, Magnolia Mining District, Boulder County, Colorado, USA
2.7km (1.7 miles) ⓘKeystone Mine, Magnolia Mining District, Boulder County, Colorado, USA
2.8km (1.7 miles) ⓘLady Franklin Mine, Magnolia Mining District, Boulder County, Colorado, USA
2.8km (1.7 miles) ⓘPoorman Mine (1), Magnolia Mining District, Boulder County, Colorado, USA
3.2km (2.0 miles) ⓘLast Chance (Gray Copper Emerson; Concord; Forest; Franklin Occurrence), Gold Hill Mining District, Boulder County, Colorado, USA
3.6km (2.2 miles) ⓘAlaska Mine, Crisman, Sugarloaf Mining District, Boulder County, Colorado, USA
3.7km (2.3 miles) ⓘNancy Wood mine (Sugar Loaf; Forest; Pittsburg; Gray Copper), Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA
4.8km (3.0 miles) ⓘIngram mine (Valley Forge Occurrence; Critic and Railroad Boy; Sunshine; Three Brothers; Atchison; Belle; Golden Eagle; Melvina; Baron; Richmond), Gold Hill Mining District, Boulder County, Colorado, USA
References
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
 
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