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
C and H Mine group, Sycamore Canyon, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA


Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view C and H Mine group, Sycamore Canyon, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:537351
Long-form Identifier:1:3:537351:2
GUID (UUID V4):0
Nearest other occurrences of Calcite
1.1km (0.7 miles) ⓘNew York Mine, Beuhman Hill, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
8.5km (5.3 miles) ⓘSanta Rita Quarry, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
9.9km (6.2 miles) ⓘJerome No. 2 Mine, State of Maine group, Hilton Mines, Copper Camp, Hilton (Lead Mountain), Empire Mining District, Empire Mountains, Pima County, Arizona, USA
9.9km (6.2 miles) ⓘPrince Mine group, Hilton Mines, Copper Camp, Hilton (Lead Mountain), Empire Mining District, Empire Mountains, Pima County, Arizona, USA
10.0km (6.2 miles) ⓘForty-nine Mine, Prince Mine group, Hilton Mines, Copper Camp, Hilton (Lead Mountain), Empire Mining District, Empire Mountains, Pima County, Arizona, USA
10.0km (6.2 miles) ⓘChief Mine, Prince Mine group, Hilton Mines, Copper Camp, Hilton (Lead Mountain), Empire Mining District, Empire Mountains, Pima County, Arizona, USA
10.1km (6.3 miles) ⓘHeavy Weight Mine, Heavy Weight Hill, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
10.2km (6.4 miles) ⓘKinoite type locality drill hole, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
10.2km (6.4 miles) ⓘEclipse Mine group, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
10.4km (6.5 miles) ⓘOmega Mine, Monument Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
References
MRDS database Dep. ID file #10039612, MRDS ID #M050491.
 
and/or  
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