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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Calcite from
Firefly–Pigmay Mine, La Sal Creek Mining District, San Juan County, Utah, USA


00571980017272045939533.jpg
Calcite

Firefly–Pigmay Mine, La Sal Creek Mining District, San Juan County, Utah, USA
00571980017272045939533.jpg
Calcite

Firefly–Pigmay Mine, La Sal Creek Mining District, San Juan County, Utah, USA
08545720017272045913377.jpg
Calcite

Firefly–Pigmay Mine, La Sal Creek Mining District, San Juan County, Utah, USA
Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Clausthalite1
Native Selenium1
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Firefly–Pigmay Mine, La Sal Creek Mining District, San Juan County, Utah, USA
Data Identifiers
Mindat Occurrence Record ID:358677
Long-form Identifier:1:3:358677:8
GUID (UUID V4):0
Nearest other occurrences of Calcite
0.6km (0.4 miles) ⓘLittle Don Mine, La Sal Creek Mining District, San Juan County, Utah, USA
1.5km (0.9 miles) ⓘVanadium Queen Mine, La Sal Creek Mining District, San Juan County, Utah, USA
3.3km (2.1 miles) ⓘBlue Cap Mine, La Sal Creek Mining District, San Juan County, Utah, USA
13.0km (8.0 miles) ⓘCliff Dweller Mine, La Sal Mining District (Paradox Valley Mining District), Montrose County, Colorado, USA
13.3km (8.3 miles) ⓘCashin Mine (Red Chief claim; Titon claim; Angell claim; Horse Shoe claim; Bennie claim; Maud claim; Humboldt claim), La Sal Mining District (Paradox Valley Mining District), Montrose County, Colorado, USA
17.0km (10.6 miles) ⓘSunrise Mine (Patented Claim: Sunrise; MS 16001), La Sal Mining District (Paradox Valley Mining District), Montrose County, Colorado, USA
17.2km (10.7 miles) ⓘMorning Glory Mines, La Sal Mining District (Paradox Valley Mining District), Montrose County, Colorado, USA
17.6km (10.9 miles) ⓘBlue Crystal Mine, Lisbon Valley Mining District, San Juan County, Utah, USA
17.9km (11.1 miles) ⓘLisbon Mine & Mill (Lisbon; Lisbon Mine-Rio Algom), Lisbon Valley Mining District, San Juan County, Utah, USA
18.9km (11.8 miles) ⓘRadon Mine, Lisbon Valley Mining District, San Juan County, Utah, USA
References
Thorne, Brent (n.d.) Personal communcation.
 
and/or  
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