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
Coconino Mine, Rosemont (Rosemont Camp), Helvetia-Rosemont Mining District, Pima County, Arizona, USA


Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Coconino Mine, Rosemont (Rosemont Camp), Helvetia-Rosemont Mining District, Pima County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:265461
Long-form Identifier:1:3:265461:4
GUID (UUID V4):0
Nearest other occurrences of Calcite
2.7km (1.7 miles) ⓘKinoite type locality drill hole, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
2.9km (1.8 miles) ⓘEclipse Mine group, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
3.0km (1.9 miles) ⓘGolden Gate Mine group, Rosemont (Rosemont Camp), Helvetia-Rosemont Mining District, Pima County, Arizona, USA
3.1km (1.9 miles) ⓘOmega Mine, Monument Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
4.0km (2.5 miles) ⓘHeavy Weight Mine, Heavy Weight Hill, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
6.0km (3.8 miles) ⓘSanta Rita Quarry, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
7.3km (4.5 miles) ⓘGreaterville, Greaterville Mining District, Pima County, Arizona, USA
7.7km (4.8 miles) ⓘYuba Mine (Inghram Mine), Hughes Gulch, Greaterville placer deposits, Greaterville, Greaterville Mining District, Pima County, Arizona, USA
7.7km (4.8 miles) ⓘSt. Louis Mine (Morning Star Mine; Isabel), St. Louis Gulch, Hughes Gulch, Greaterville placer deposits, Greaterville, Greaterville Mining District, Pima County, Arizona, USA
7.8km (4.9 miles) ⓘQuebec Mine, N Gulch, Greaterville placer deposits, Greaterville, Greaterville Mining District, Pima County, Arizona, USA
References
Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 130.
 
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