Locality type: | Mine |
Classification |
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Species: | Vermiculite |
Formula: | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
Comments: | Alteration of biotite. |
Abundance at site: | Rare |
Confirmation |
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Validity: | Believed Valid |
Data |
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Mineral Data: | Click here to view Vermiculite data |
Locality Data: | Click here to view Hercules Mine (Beryl claim; Hercules claim; Hercules group; Hercules prospect), Ramona, Ramona Mining District, San Diego County, California, USA |
Data Identifiers |
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Mindat Occurrence Record ID: | 689572 |
Long-form Identifier: | 1:3:689572:3 |
GUID (UUID V4): | c713f569-d5e5-4f9c-b7fb-8d1043ce90eb |
Nearest other occurrences of Vermiculite |
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0.2km (0.1 miles) | ⓘLittle Three Mine, Ramona, Ramona Mining District, San Diego County, California, USA |
72.8km (45.3 miles) | ⓘCircle Group deposit, San Diego County, California, USA |
References |
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Foord, Eugene E., Martin, Robert F., Spaulding, Louis B., Mason, Roger A. (1989) Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. The Mineralogical Record, 20 (2) 101-127p.106 |