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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Microcline from
Mesa Grande Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA


Locality type:Mine
Classification
Species:Microcline
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Spessartine1
Cookeite1
Albite1
- var Cleavelandite1
Beryl1
- var Morganite1
Data
Mineral Data:Click here to view Microcline data
Locality Data:Click here to view Mesa Grande Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
Data Identifiers
Mindat Occurrence Record ID:429421
Long-form Identifier:1:3:429421:4
GUID (UUID V4):0
Nearest other occurrences of Microcline
0.4km (0.3 miles) ⓘSan Diego Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
0.6km (0.4 miles) ⓘHimalaya Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
13.4km (8.3 miles) ⓘMaple Lode Mine (Maple claim), Aguanga Mountain, Oak Grove, Aguanga Mountain Mining District (Smith Mountain Mining District), San Diego County, California, USA
14.3km (8.9 miles) ⓘMountain Lily Mine (Emeralite No. 2 claim; Gem Mine No. 1 claim; Ware mine), Aguanga Mountain, Oak Grove, Aguanga Mountain Mining District (Smith Mountain Mining District), San Diego County, California, USA
14.4km (9.0 miles) ⓘCalac prospect, Rincon Mountain, Rincon, Rincon Mining District, San Diego County, California, USA
14.5km (9.0 miles) ⓘClark Mine, Rincon Mountain, Rincon, Rincon Mining District, San Diego County, California, USA
14.6km (9.1 miles) ⓘVictor Mine (Big Buck mine; Big Buck prospect), Rincon Mountain, Rincon, Rincon Mining District, San Diego County, California, USA
15.1km (9.4 miles) ⓘProspect Mine, Ramona, Ramona Mining District, San Diego County, California, USA
15.8km (9.8 miles) ⓘApollo Lode claim, Ramona, Ramona Mining District, San Diego County, California, USA
16.3km (10.1 miles) ⓘLookout Mine (Hercules group; Lookout prospect; Upper Hercules mine), Ramona, Ramona Mining District, San Diego County, California, USA
References
San Diego Mining Company 1996. Gem Hill exploration program
Cordova, E. M., Ritchie, S. L., Rose, C. H., Wilson, R.
Mesa Grande mine field analysis and valuable mineral discovery, Winter 1995-96.
 
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