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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Bornite from
Tanner Boy Mine, Mount Bross, Alma Mining District, Park County, Colorado, USA


Locality type:Mine
Classification
Species:Bornite
Formula:Cu5FeS4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Bornite data
Locality Data:Click here to view Tanner Boy Mine, Mount Bross, Alma Mining District, Park County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:435404
Long-form Identifier:1:3:435404:8
GUID (UUID V4):0
Nearest other occurrences of Bornite
1.1km (0.7 miles) ⓘWyandotte Mine, Alma Mining District, Park County, Colorado, USA
2.3km (1.4 miles) ⓘSweet Home Mine, Detroit City Claim Block, Mount Bross, Alma Mining District, Park County, Colorado, USA
2.3km (1.4 miles) ⓘDetroit City Mine, Detroit City Claim Block, Mount Bross, Alma Mining District, Park County, Colorado, USA
4.4km (2.7 miles) ⓘCopper King Prospect, Horseshoe Basin Mining District, Park County, Colorado, USA
5.2km (3.3 miles) ⓘLing Mine (North Star), Monte Cristo Area, Summit County, Colorado, USA
6.8km (4.2 miles) ⓘClimax Mine, Climax, Climax Mining District, Lake County, Colorado, USA
11.0km (6.9 miles) ⓘBuckeye Gulch, Alicante, Lake County, Colorado, USA
32.6km (20.2 miles) ⓘEagle Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
44.2km (27.4 miles) ⓘTamarack Occurrence, Buena Vista Area, Free Gold Mining District, Chaffee County, Colorado, USA
49.2km (30.6 miles) ⓘMike Rabbit Prospect, La Plata Mining District (Winfield Mining District), Chaffee County, Colorado, USA
References
Muntyan, Barbara (1979) Colorado Locality Index. The Mineralogical Record, 10 (6) 323-328
 
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