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Muscovite from
Helvetia Mine, Julian, Julian Mining District, San Diego County, California, USA


Locality type:Mine
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Helvetia Mine, Julian, Julian Mining District, San Diego County, California, USA
Data Identifiers
Mindat Occurrence Record ID:860348
Long-form Identifier:1:3:860348:7
GUID (UUID V4):0
Nearest other occurrences of Muscovite
3.4km (2.1 miles) ⓘSouth Hubbard, Banner, Banner Mining District, San Diego County, California, USA
5.7km (3.5 miles) ⓘGolden Chariot Mine (Golden Chariot claims; Chariot North claims; Ida Claire; Eureka group), Julian, Julian Mining District, San Diego County, California, USA
7.0km (4.3 miles) ⓘRoyal Mine (Lithium Queen claim; Pandora deposit; Royal deposit; Thursday claim), Rodriguez Canyon, Banner Mining District, San Diego County, California, USA
15.4km (9.6 miles) ⓘMason Valley Gem claim, Mason Valley, Banner Mining District, San Diego County, California, USA
19.5km (12.1 miles) ⓘSurprise Mine, Ramona, Ramona Mining District, San Diego County, California, USA
19.6km (12.2 miles) ⓘLookout Mine (Hercules group; Lookout prospect; Upper Hercules mine), Ramona, Ramona Mining District, San Diego County, California, USA
19.7km (12.3 miles) ⓘHercules Mine (Beryl claim; Hercules claim; Hercules group; Hercules prospect), Ramona, Ramona Mining District, San Diego County, California, USA
19.8km (12.3 miles) ⓘLittle Three Mine, Little Three Mine area, Ramona, Ramona Mining District, San Diego County, California, USA
20.0km (12.4 miles) ⓘApollo Lode claim, Ramona, Ramona Mining District, San Diego County, California, USA
20.0km (12.4 miles) ⓘCoyote diggings, Ramona, Ramona Mining District, San Diego County, California, USA
References
Koschmann, Albert Herbert, Bergendahl, M.H. (1968) Principal gold-producing districts of the United States. Professional Paper 610. US Geological Survey doi:10.3133/pp610
 
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