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Darling Mine (Chanced Upon), Spanish Flat, Spanish Flat District, East Belt, El Dorado Co., California, USA

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Latitude & Longitude (WGS84): 38° 50' 39'' North , 120° 45' 15'' West
Latitude & Longitude (decimal): 38.8441666667, -120.754166667
 
A Au property located in the NW¼SE¼ sec. 33, T12N, R11E, MDM, 5.3 km (3.3 miles) ENE of Spanish Flat, W of Rock Creek and about 3 miles NE of American Flat, on private land within a National Forest area. Operated around 1892. MRDS database stated accuracy for this location is 500 meters.

Mineralization is a vein deposit hosted in Calaveras slate. The ore body strikes N and dips 78E at a thickness of 0.61 meters. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).

Workings include underground openings with an overall depth of 57.91 meters and comprised of a 190 foot shaft.

No production record was found.

Contains $5 to $6 Au/ton (period values).

Mineral List



4 entries listed. 4 valid minerals.

The above list 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

Irelan, W. Jr. (1893) Report of the state mineralogist, Issue 11.

Tucker, W. Burling & C.A. Waring (1919), El Dorado County: California Journal of Mines and Geology, California Mining Bureau. (Report 15): 15: 284.

Logan, Clarence August (1938), Mineral resources of El Dorado County: California Journal of Mines and Geology, California Division Mines (Report 34): 34(3): 260.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 336.

Clark, Wm. B. & D.W. Carlson (1956), Mines and mineral resources of El Dorado County, California: California Journal of Mines and Geology: 52(4): 496, Pl. 10.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 116, 286.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 109, 110.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10007096 & 10163551.

U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060170865.

 
Mineral and/or Locality  
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