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Serpentine Subgroup from
Unnamed Cr occurrence [1], Upper Crystal Springs Reservoir (Crystal Springs Lake), San Mateo, San Mateo County, California, USA


Locality type:Occurrence
Classification
Species:'Serpentine Subgroup' (not an IMA approved species)
Formula:D3[Si2O5](OH)4
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Chromite
Data
Mineral Data:Click here to view Serpentine Subgroup data
Locality Data:Click here to view Unnamed Cr occurrence [1], Upper Crystal Springs Reservoir (Crystal Springs Lake), San Mateo, San Mateo County, California, USA
Data Identifiers
Mindat Occurrence Record ID:667679
Long-form Identifier:1:3:667679:7
GUID (UUID V4):0
Nearest other occurrences of Serpentine Subgroup
9.1km (5.6 miles) ⓘChallenge deposit, Redwood City, San Mateo County, California, USA
15.8km (9.8 miles) ⓘJ. M. MacDonough Ranch Mine, Portola Valley, San Mateo County, California, USA
31.4km (19.5 miles) ⓘUnited States Mint site, Duboce Street near Market Street, San Francisco, San Francisco County, California, USA
35.9km (22.3 miles) ⓘFort Point, San Francisco, San Francisco County, California, USA
47.2km (29.3 miles) ⓘAlum Rock Canyon, East Foothills, Black Wonder Mining District, Santa Clara County, California, USA
51.1km (31.8 miles) ⓘStinson Beach, Marin County, California, USA
51.2km (31.8 miles) ⓘGuadalupe Mine, New Almaden, New Almaden Mining District, Santa Clara County, California, USA
51.7km (32.1 miles) ⓘSenator Mine (El Senador), New Almaden, New Almaden Mining District, Santa Clara County, California, USA
52.1km (32.4 miles) ⓘGreenwalls property, El Sombroso, Santa Clara County, California, USA
52.9km (32.9 miles) ⓘSmith prospect (Smith property), Edenvale, San Jose, Santa Clara County, California, USA
References
Hanks, Henry Garber (1884), Fourth report of the State Mineralogist: California Mining Bureau. Report 4, 410 pp.: 137
Huguenin, Emile & W.O. Castello (1921), Alameda, Contra Costa, San Francisco, San Mateo, Santa Clara, Santa Cruz Counties: California Mining Bureau. Report 17: 172
Murdoch, Joseph; Webb, Robert Wallace (1966) Minerals of California, Centennial Volume (1866-1966) - California Division of Mines and Geology, Bulletin 189. California Division of Mines and Geology. 559 pp.
 
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