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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Pyrite from
Helena Mine, Empire Ranch, Helvetia-Rosemont Mining District, Pima County, Arizona, USA


Locality type:Mine
Classification
Species:Pyrite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrite data
Locality Data:Click here to view Helena Mine, Empire Ranch, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:537355
Long-form Identifier:1:3:537355:0
GUID (UUID V4):0
Nearest other occurrences of Pyrite
5.0km (3.1 miles) ⓘExile King Mine, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
5.2km (3.2 miles) ⓘBroad Top Mine, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
5.4km (3.4 miles) ⓘDaylight Mine (York Mine), Daylight-Narragansett Mines (Narragansett-Daylight Mines), Rosemont (Rosemont Camp), Helvetia-Rosemont Mining District, Pima County, Arizona, USA
5.4km (3.4 miles) ⓘEclipse Mine group, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
5.7km (3.5 miles) ⓘCopper World Mine, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
5.7km (3.5 miles) ⓘNarragansett Mine (Narragansett claim; Narragansett Bay claim; Olcutt claim), Daylight-Narragansett Mines (Narragansett-Daylight Mines), Rosemont (Rosemont Camp), Helvetia-Rosemont Mining District, Pima County, Arizona, USA
5.8km (3.6 miles) ⓘIsle Royal Mine, Isle Royal Mine group, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
5.9km (3.7 miles) ⓘPauline Mine, Mount Fagan, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
5.9km (3.7 miles) ⓘLeader Mine, Leader Hill, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
5.9km (3.7 miles) ⓘOmega Extension Mine, Monument Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
References
MRDS database Dep. ID file #10039613, MRDS ID #M050493.
 
and/or  
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