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Native Platinum from
Michigan Bar Mines, Bridge House, Michigan Bar Mining District, Sacramento County, California, USA


Locality type:Mine
Classification
Species:Native Platinum
Formula:Pt
Comments:Placer material that averages 44.75% Pt, 24.84% Ir, 21.72% Os, and 8.69% Ru.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Native Platinum data
Locality Data:Click here to view Michigan Bar Mines, Bridge House, Michigan Bar Mining District, Sacramento County, California, USA
Data Identifiers
Mindat Occurrence Record ID:639967
Long-form Identifier:1:3:639967:2
GUID (UUID V4):0
Nearest other occurrences of Native Platinum
17.3km (10.8 miles) ⓘNatomas Mine (Natomas Company Mine), Rancho Cordova, Folsom Mining District, Sacramento County, California, USA
17.4km (10.8 miles) ⓘFolsom Mine (American River District; Natomas Company; Capital Dredging Company; Folsom-Natoma District), Folsom Mining District, Sacramento County, California, USA
19.6km (12.2 miles) ⓘMississippi Bar Placer Mine (American River area), Folsom, Folsom Mining District, Sacramento County, California, USA
28.8km (17.9 miles) ⓘClements area placers, Dogtown, Camanche Mining District, San Joaquin County, California, USA
33.1km (20.6 miles) ⓘCamanche Mining District, San Joaquin County, California, USA
33.9km (21.1 miles) ⓘAtlas Gold Dredging Corporation Mine, Wallace, Camanche Mining District, Calaveras County, California, USA
34.0km (21.1 miles) ⓘUnnamed Au placers [99], Mokelumne River, Calaveras County, California, USA
34.7km (21.6 miles) ⓘFourth of July claim, Campo Seco area, Camanche Mining District, Calaveras County, California, USA
39.7km (24.7 miles) ⓘBuffalo-What-Cheer Mines, Mokelumne Hill, Mokelumne Hill Mining District, East Belt, Calaveras County, California, USA
46.0km (28.6 miles) ⓘUnnamed placer PGE occurrence [1], Cool, El Dorado County, California, USA
References
Logan, C. A. (1919) Platinum and Allied Metals in California. Bulletin 85. California State Mining Bureaupages 30-31, 109
Mertie, J.B. (1969) Economic geology of the platinum metals. USGS Professional Paper 630, 120 pp.: 94
Clark, Wm. B. (1970b) Platinum: California Division Mines and Geology Mineral Information Service: 23(6): 115-123.
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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