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
Prospect Mine, Ramona, Ramona Mining District, San Diego County, California, USA


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Prospect Mine, Ramona, Ramona Mining District, San Diego County, California, USA
Data Identifiers
Mindat Occurrence Record ID:700421
Long-form Identifier:1:3:700421:6
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.9km (0.6 miles) ⓘA.B.C. Mine (ABC Mine; Daggett & MacIntosh; Daggett group), Ramona, Ramona Mining District, San Diego County, California, USA
1.0km (0.7 miles) ⓘCoyote diggings, Ramona, Ramona Mining District, San Diego County, California, USA
1.2km (0.7 miles) ⓘApollo Lode claim, Ramona, Ramona Mining District, San Diego County, California, USA
1.3km (0.8 miles) ⓘEquestrian prospect, Ramona, Ramona Mining District, San Diego County, California, USA
1.6km (1.0 miles) ⓘCable Mine (Little Three Extension prospect; New A.B.C. prospect; New ABC prospect), Little Three Mine area, Ramona, Ramona Mining District, San Diego County, California, USA
1.8km (1.1 miles) ⓘLookout Mine (Hercules group; Lookout prospect; Upper Hercules mine), Ramona, Ramona Mining District, San Diego County, California, USA
1.8km (1.1 miles) ⓘHercules Mine (Beryl claim; Hercules claim; Hercules group; Hercules prospect), Ramona, Ramona Mining District, San Diego County, California, USA
1.8km (1.1 miles) ⓘSunrise claim (Black Panther prospect), Ramona, Ramona Mining District, San Diego County, California, USA
1.9km (1.2 miles) ⓘLittle Three Mine, Little Three Mine area, Ramona, Ramona Mining District, San Diego County, California, USA
2.5km (1.6 miles) ⓘSurprise Mine, Ramona, Ramona Mining District, San Diego County, California, USA
References
King, Van (n.d.) Personal communcation.
 
and/or  
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