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
Onyx Cave, Greaterville Mining District, Santa Cruz County, Arizona, USA


02116790017376828865500.jpg
Calcite

Onyx Cave, Greaterville Mining District, Santa Cruz County, Arizona, USA
02116790017376828865500.jpg
Calcite

Onyx Cave, Greaterville Mining District, Santa Cruz County, Arizona, USA
04525460017272064568588.jpg
Calcite

Onyx Cave, Greaterville Mining District, Santa Cruz County, Arizona, USA
Locality type:Cave
Classification
Species:Calcite
Formula:CaCO3
Comments:Magnificent specimen groups of crystals; also as dripstone.
Habit:Scalenohedral
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Onyx Cave, Greaterville Mining District, Santa Cruz County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:246265
Long-form Identifier:1:3:246265:3
GUID (UUID V4):0
Nearest other occurrences of Calcite
0.9km (0.6 miles) ⓘOld Baldy prospects, Littleshot Camp, Madera Canyon, Old Baldy Mining District, Santa Cruz County, Arizona, USA
1.4km (0.9 miles) ⓘConglomerate Mine (Anderson Mine; Snyder Mine; Silver Moon; Sonoita; Reese; Colossa; Aurum; A.W.A.; Anderson prospect), Fish Canyon, Greaterville, Greaterville Mining District, Pima County, Arizona, USA
4.0km (2.5 miles) ⓘSanta Rita group (Hammer Head group), Greaterville Mining District, Pima County, Arizona, USA
4.6km (2.9 miles) ⓘSt. Louis Mine (Morning Star Mine; Isabel), St. Louis Gulch, Hughes Gulch, Greaterville placer deposits, Greaterville, Greaterville Mining District, Pima County, Arizona, USA
4.7km (2.9 miles) ⓘQuebec Mine, N Gulch, Greaterville placer deposits, Greaterville, Greaterville Mining District, Pima County, Arizona, USA
5.1km (3.1 miles) ⓘYuba Mine (Inghram Mine), Hughes Gulch, Greaterville placer deposits, Greaterville, Greaterville Mining District, Pima County, Arizona, USA
5.5km (3.4 miles) ⓘGreaterville, Greaterville Mining District, Pima County, Arizona, USA
6.5km (4.0 miles) ⓘFlorida Mine, Robinson property (Robinson group), Stone Cabin Canyon, Old Baldy Mining District, Pima County, Arizona, USA
9.4km (5.8 miles) ⓘGolden Gate Mine group, Rosemont (Rosemont Camp), Helvetia-Rosemont Mining District, Pima County, Arizona, USA
11.5km (7.1 miles) ⓘAmerican Boy Mine (Lost Horse; Rhode Island; Down #1 & #2; Albert Gross; Fraction; New York; American), Piper Gulch, Mansfield Gulch (Mansfield Canyon), Temporal Gulch, Wrightson Mining District, Santa Cruz County, Arizona, USA
References
Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 46, 47.
Anthony, John W.; Williams, Sidney A.; Bideaux, Richard A.; Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.p.152
 
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