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Lost Horse Mine (Peterson Mine; Ruggles Mine), Eagle Creek Ranch, Trinity Fork District (Trinity District), Trinity Mts, Klamath Mts, Trinity Co., California, USA

Latitude: 41°6'3"N
Longitude: 122°41'7"W
A former lode Au occurrence/mine located in the NW¼SE¼ (estimated) sec. 4, T37N, R7W, MDM, 4.3 km (2.6 miles) S of Eagle Creek Ranch and N of Scorpion Creek, on National Forest land. MRDS database stated accuracy for this location is 500 meters.

Mineralization is a Au occurrence with quartz veins hosted in gabbro and rhyolite. The ore body strikes N15W and dips 70SW. Andesitic or rhyolitic dikes were observed in the adit on the SE side of the ridge are described as fine-grained, decomposed and stained with iron oxides. Local rocks include Mesozoic gabbroic rocks, unit 1 (Trinity Ophiolite).

Workings include underground openings. There are workings on both sides of the ridge between Scorpion Creek and a small, unnamed tributary. There is a 50 foot adit, a 50 foot deep winze on the vein to the NW side of the ridge. There is an adit several hundred feet long on the opposite side of the ridge. There is also an old millsite.

Analytical data results: 2 samples from winze assayed at $100 and $88 in Au (period values).

Mineral List

Gold
Quartz


2 entries listed. 2 valid minerals.

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References

Averill, Charles V. (1941), Mineral resources of Trinity County: California Journal of Mines and Geology, California Division Mines (Report 37): 37(1): 82.

MacDonald, Donald Francis (1913), Notes on the gold lodes of the Carrville district, Trinity County, California: USGS Bulletin 530-D: 9-41: Pl. 1.

Pacific Southwest Field Committee (PSFC) (1955), Natural Resources of NW California Geol. Mines Resources: figure 4.

McCulloch, W.C., Oesterling, W.A., Spurck, W.H., & Tischler, M.S. (1964), Minerals for Industry, Northern California, Southern Pacific Company: Vol. II: 133.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10035836, 10035839 & 10141232.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0061050393.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. 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.
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