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
Unnamed Fluorspar occurrence, Kofa Mining District, Yuma County, Arizona, USA


Locality type:Occurrence
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Unnamed Fluorspar occurrence, Kofa Mining District, Yuma County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:520486
Long-form Identifier:1:3:520486:1
GUID (UUID V4):0
Nearest other occurrences of Calcite
6.2km (3.8 miles) ⓘEngesser Mine (Engesser prospect; Johnnie prospect), Engesser Pass, Tank Mountains Mining District, Tank Mountains, Yuma County, Arizona, USA
7.5km (4.7 miles) ⓘBig Horn prospect, Red Raven Wash, Ocotillo Mine Group, Yuma County, Arizona, USA
7.8km (4.9 miles) ⓘC.O.D. Mine (C.O.D. prospect; C.O.D. group of claims), Red Raven Wash, Ocotillo Mine Group, Yuma County, Arizona, USA
8.4km (5.2 miles) ⓘBlack Dahlia Mine, Kofa Mining District, Yuma County, Arizona, USA
9.4km (5.9 miles) ⓘKing of Arizona Mine, Kofa Mining District, Yuma County, Arizona, USA
10.6km (6.6 miles) ⓘIXL Mine (I.X.L. prospect; IXL prospect), Geyser lode, Ocotillo Mine Group, Yuma County, Arizona, USA
12.2km (7.6 miles) ⓘRegal prospect (Regal group prospect), Yuma County, Arizona, USA
12.4km (7.7 miles) ⓘBlack King Mine, Tank Mountains Mining District, Tank Mountains, Yuma County, Arizona, USA
14.2km (8.8 miles) ⓘSheep Tanks Mine (Sheep Tank Mine; Resolution group), Sheep Tanks Mining District, Little Horn Mountains, Yuma County, Arizona, USA
15.7km (9.8 miles) ⓘCemitosa prospect, La Paz County, Arizona, USA
References
MRDS database Dep. ID file #10056480, MRDS ID #TC00321.
 
and/or  
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