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Bobcat A and Alta Anchor claims (Bobcat and Anchor claims), Picacho Peak, San Benito County, California, USAi
Regional Level Types
Bobcat A and Alta Anchor claims (Bobcat and Anchor claims)Group of Claims
Picacho PeakPeak
San Benito CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
36° 21' 2'' North , 120° 40' 45'' West
Latitude & Longitude (decimal):
36.35083,-120.67944
GRN:
N25W70
Type:
Group of Claims
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Three Rocks246 (2011)30.8km
Cantua Creek466 (2011)36.5km
Coalinga16,564 (2017)37.0km
San Lucas269 (2015)39.3km
San Ardo517 (2015)41.9km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Coalinga Rockhound SocietyCoalinga, California37km
Mindat Locality ID:
87768
Long-form identifier:
mindat:1:2:87768:1
GUID (UUID V4):
0


A former Cr-Fe occurrence/mine located in sec. 20, T18S, R12E, MDM, 0.9 km (0.6 mile; 3,000 feet) NE of Picacho Peak (coordinates of record) (located claim). Discovered in 1954. Owned by Herman Akers, California (1976). Operated by Mr. J. R. Holman - James Mining Company, California (1976). First production was in 1954. MRDS database stated accuracy for this location is 1,000 meters.

The ore body is 1.2 meters wide and 3.8 meters long with a depth-to-top of 0.0 meters. It is disseminated and lenticular. The primary mode of origin was magmatic differentiation. Primary ore control was lithology and the secondary control was a contact zone. Wallrock alteration is intense (carbonitization). Local rocks include ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains).

Workings include unspecified surface openings.

The average of chromite is 53%.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


3 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
Group 9 - Silicates
ⓘUvarovite9.AD.25Ca3Cr2(SiO4)3
ⓘClinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘvar. Pennine9.EC.55Mg5Al(AlSi3O10)(OH)8
Unclassified
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Hⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
OOxygen
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Oⓘ UvaroviteCa3Cr2(SiO4)3
Oⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
MgMagnesium
Mgⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
AlAluminium
Alⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Alⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
SiSilicon
Siⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Siⓘ UvaroviteCa3Cr2(SiO4)3
Siⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
CaCalcium
Caⓘ UvaroviteCa3Cr2(SiO4)3
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
Crⓘ UvaroviteCa3Cr2(SiO4)3
FeIron
Feⓘ ChromiteFe2+Cr23+O4

Other Databases

Link to USGS MRDS:10140307

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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References

U.S. Bureau of Mines Minerals Availability System/Mineral Industry Location System (MAS/MILS): file #0060690140.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
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