A former Au-Mn occurrence/prospect located in sec. 7, T26N, R9E, MDM, 4.8 km (3.0 miles) WSW of Greenville, on National Forest land. Also located in sec. 8. Discovered 1941. Owned by A.F. Smith and C. Develter, California (1974). MRDS database stated accuracy for this location is 1,000 meters.

Mineralization is an ore body which strikes NW and dips nearly vertical. The deposit is a small bed in Au workings. A few tons of Mn oxides and silicates were found on the dump. The abundance of Mn silicates and the location near creek bottom suggest that the oxide ore is shallow. Local rocks include Permian marine sedimentary rocks, unit 3 (Northeastern Sierra Nevada).

Estimated reserves are 50 tons, estimated to be 15% to 40% Mn.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ 'Manganese Oxides'

ⓘ Rhodonite

1 valid mineral.

Detailed Mineral List:

ⓘ 'Manganese Oxides'

References:

Trask, Parker Davies (1950) Geologic description of the manganese deposits of California. California Division of Mines Bulletin 152, 378 pp.: 175

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Rhodonite

Formula: CaMn₃Mn[Si₅O₁₅]

References:

Trask, Parker Davies, Ivan F. Wilson & F.S. Simons (1943), Manganese deposits of California – a summary report: California Division Mines Bulletin 125: 151-153

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 322.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘ	Rhodonite	9.DK.05	CaMn₃Mn[Si₅O₁₅]
Unclassified
ⓘ	'Manganese Oxides'	-

List of minerals for each chemical element

O	Oxygen
O	ⓘ Rhodonite	CaMn₃Mn[Si₅O₁₅]
Si	Silicon
Si	ⓘ Rhodonite	CaMn₃Mn[Si₅O₁₅]
Ca	Calcium
Ca	ⓘ Rhodonite	CaMn₃Mn[Si₅O₁₅]
Mn	Manganese
Mn	ⓘ Rhodonite	CaMn₃Mn[Si₅O₁₅]

Other Databases

Link to USGS MRDS:	10237157

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Shoofly-Olds Ferry DomainDomain
Sierra Nevada BatholithVolcanic Arc

USA

Sierra NevadaMountain Range

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060630007

Averill, Charles V. (1937), Mineral resources of Plumas County: California Journal of Mines and Geology, California Division Mines (Report 33): 33(2): 132

Trask, Parker Davies, Ivan F. Wilson & F.S. Simons (1943), Manganese deposits of California – a summary report: California Division Mines Bulletin 125: 151-153

Trask, Parker Davies (1950) Geologic description of the manganese deposits of California. California Division of Mines Bulletin 152, 378 pp.: 175

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 322.

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

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