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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Pyrrhotite from
Copper King Mine (Yeager's Mine), Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA


Locality type:Mine
Classification
Species:Pyrrhotite
Formula:Fe1-xS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrrhotite data
Locality Data:Click here to view Copper King Mine (Yeager's Mine), Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:33933
Long-form Identifier:1:3:33933:7
GUID (UUID V4):0
Nearest other occurrences of Pyrrhotite
8.0km (5.0 miles) ⓘKansas City Tunnel, Magnolia Mining District, Boulder County, Colorado, USA
24.6km (15.3 miles) ⓘMena Mine (Hoffmeister Homestead Prospect; Black Judge Shaft), Ralston Buttes Mining District, Jefferson County, Colorado, USA
26.2km (16.3 miles) ⓘSchwartzwalder Mine (Ralston Creek Mine), Ralston Buttes Mining District, Jefferson County, Colorado, USA
30.6km (19.0 miles) ⓘPatch Mine, Central City Mining District (Central Mining District), Gilpin County, Colorado, USA
31.0km (19.3 miles) ⓘWood Mine (E. Calhoun), Willis Gulch, Quartz Hill, Central City Mining District (Central Mining District), Gilpin County, Colorado, USA
32.6km (20.2 miles) ⓘMo Prospect (MRDS - 10013711), Ralston Buttes Mining District, Jefferson County, Colorado, USA
34.2km (21.2 miles) ⓘBuckman Property (Golden Gate Canyon Prospect No. 2), Ralston Buttes Mining District, Jefferson County, Colorado, USA
34.2km (21.3 miles) ⓘLadwig Group (Ladwig No. 2; Ladwig No. 3; Claims: Ladwig No. 1), Ralston Buttes Mining District, Jefferson County, Colorado, USA
43.1km (26.8 miles) ⓘF.M.D. Mine, Evergreen Mining District (Malachite Mining District), Jefferson County, Colorado, USA
44.0km (27.4 miles) ⓘMalachite Mine (Morrison), Evergreen Mining District (Malachite Mining District), Jefferson County, Colorado, USA
References
Rocks & Min.: 22:205.
American Mineralogist 28:257-271
Lovering, T.S., Goddard, E.N. (1950) Geology and ore deposits of the Front Range, Colorado. Professional Paper 223. US Geological Survey doi:10.3133/pp223
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
 
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