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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Quartz from
Opal Mountains Agate Field prospect (Black Mountain; Black Mtn), Opal Mountain, San Bernardino County, California, USA


Locality type:Prospect
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Opal Mountains Agate Field prospect (Black Mountain; Black Mtn), Opal Mountain, San Bernardino County, California, USA
Data Identifiers
Mindat Occurrence Record ID:987889
Long-form Identifier:1:3:987889:1
GUID (UUID V4):0
Nearest other occurrences of Quartz
2.0km (1.2 miles) ⓘUnnamed Au-Cu mine [28], Opal Mountain, San Bernardino County, California, USA
6.1km (3.8 miles) ⓘUnnamed Jasper occurrence [2], Black Mountain [2], San Bernardino County, California, USA
13.0km (8.1 miles) ⓘUnnamed Au-Cu mine [31], Crutts Well, San Bernardino County, California, USA
13.3km (8.2 miles) ⓘUnnamed Au mine [252], Crutts Well, San Bernardino County, California, USA
13.9km (8.7 miles) ⓘWhite Butte deposit (Kummerfeld Mine; Beck Feldspar Mine; Beck Spar; Feld-1 claim), Bird Spring, Gravel Hills, San Bernardino County, California, USA
15.9km (9.9 miles) ⓘUnnamed Au-Cu mine [30], Coolgardie Camp, Coolgardie Mining District, San Bernardino County, California, USA
15.9km (9.9 miles) ⓘUnnamed Au-Cu mine [29], Coolgardie Camp, Coolgardie Mining District, San Bernardino County, California, USA
16.3km (10.1 miles) ⓘUnnamed Au-Cu occurrence [37] (Unnamed prospects), Coolgardie Camp, Coolgardie Mining District, San Bernardino County, California, USA
16.3km (10.2 miles) ⓘUnnamed Au-Cu mine [27] (Unnamed prospects; Gold-Copper occurrence), Mud Hills (Strontium Hills), Barstow Mining District, San Bernardino County, California, USA
19.5km (12.1 miles) ⓘUnnamed Au-Cu mine [38] (Unnamed prospect), Mount General (Mt General), Hinkley, Barstow Mining District, San Bernardino County, California, USA
References
 
and/or  
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