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
Blue Light Mine (Harvey; Silverado; Dunlap Light Blue Mine), Silverado, Orange County, California, USA


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Blue Light Mine (Harvey; Silverado; Dunlap Light Blue Mine), Silverado, Orange County, California, USA
Data Identifiers
Mindat Occurrence Record ID:700306
Long-form Identifier:1:3:700306:6
GUID (UUID V4):0
Nearest other occurrences of Quartz
11.6km (7.2 miles) ⓘYaegerr Mines (Yeager claim; Quartz), Trabuco Canyon [town], Orange County, California, USA
14.5km (9.0 miles) ⓘTemescal Tin Mine (Cajalco Tin Mine; Temescal Mine; Temescal Tin District), El Cerrito, Riverside County, California, USA
16.0km (9.9 miles) ⓘCajalco Mine (Cajalco Tin Mine; Cajalco Dumortierite occurrence), El Cerrito, Riverside County, California, USA
16.5km (10.2 miles) ⓘOrtega Mine (Old Dominion Mine), Rancho Santa Margarita, Orange County, California, USA
26.7km (16.6 miles) ⓘLake View prospect (Lakeview prospect), Lake Elsinore, Pinacate Mining District, Riverside County, California, USA
27.4km (17.0 miles) ⓘGood Hope Mine, Perris, Pinacate Mining District, Riverside County, California, USA
28.1km (17.5 miles) ⓘChief of the Hills Mine (Chief of the Hills group), Lake Elsinore, Pinacate Mining District, Riverside County, California, USA
29.2km (18.1 miles) ⓘSilver Shine prospect, De Luz, San Diego County, California, USA
29.8km (18.5 miles) ⓘEpsomite occurrences, Laguna Beach, Orange County, California, USA
30.3km (18.8 miles) ⓘReef Point, Newport Beach, Orange County, California, USA
References
Robert Housely
Emmons, S. F., Becker, G. F. (1885) Statistics and Technology of the Precious Metals. Bureau of the Census.
 
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