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Unnamed Cr-PGE prospect (1), High Plateau Mountain, Rockland, Diamond Creek District, Klamath Mts, Del Norte Co., California, USA

Latitude: 41°55'29"N
Longitude: 123°57'27"W

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A Cr-PGE (Ru-Rh-Pt-Ir-Pd) occurrence located 2.8 km (9,000 feet) WNW of High Plateau Mountain (coordinates of record). Unsurveyed. Located in Six Rivers National Forest. UTM given is for PGE sample locality. Lat/Long coordinates given are for nearby adit symbol; UTM 4641630N, 420590E.

Mineralization is a podiform chromite deposit (Deposit model: 15: Podiform chromite (minor)), hosted in dunite. Local rocks include ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains). Associated rock type is plutonic rock, ultramafic intrusive rock, peridotite
(Rock unit name Josephine Ophiolite).

Related tectonic structures include the Klamath Mountains Accreted Terrane - Western Jurassic Belt.

Analytical data for PGE sample: Results for 1 PGE analysis: Pt = 47 PPB; Pd = trace; Ir = 140 PPB; Ru = 280 PPB; and Rh = 27 PPB.

References

Carlson, C.A., et al (1985), Analyses for Platinum-Group Elements in Samples from Podiform Chromite Deposits, California and Oregon: USGS Open-File Report 85-442, 14 p.

USGS MRDS database (2005), loc. file ID #10048453.

Mineral List

Chromite

'Olivine'

2 entries listed. 1 valid mineral.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Jobs in California, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: 12th Jul 2011 11:58:11