Red Ledge Mine, Washington, Washington District (Omega District), Nevada Co., California, USA

• Display
  • Standard
  • Detailed
  • By Strunz Category
  • By Dana Category
• Photos
  • Mineral Photos (17)
  • Site Photos (3)
  • Add Photo
• Maps
  • Map Pages
  • Nearest Localities
• Search
  • Mineral Search
  • Search Google

A former Au-Cr mine located in the NW¼NE¼ sec. 13, T17N, R10E, MDM, about 2 miles SW of Washington.

Gold Mine: The gold/quartz veins occur in the sedimentary rocks close to the contact with serpentinite. Mariposite is often in association with the serpentine, and in close proximity to the gold.

Chromite Mine: The Chromite occurs in lenses and pods in the serpentine, close to the contact with the sedimentary rocks. Chromite was produced from the Red Ledge in the 1918-19 time period. The ore grade was 45%.

[Note: not to be confused with Red Ledge mine in Sierra Co.]

References

Trask, John Boardman (1853), Report on the geology of the Sierra Nevada, or California Range: California Legislature, 4th. sess., Ap. To Jour., S. Doc. 59, 30 pp.: 25.

Hanks, Henry Garber (1884), Fourth report of the State Mineralogist: California Mining Bureau. Report 4, 410 pp. (includes catalog of minerals of California pp. 63-410), and miscellaneous observations on mineral products): 137.

MacBoyle, Errol (1919), Mines and mineral resources of Nevada County: California Mining Bureau. Report 16, 270 pp. (published as separate chapter): 63, 67, 77.

Gordon, Samuel G. & E.V. Shannon (1928), Chromrutile a new mineral from California: American Mineralogist: 13: 69.

Melhase, John (1935c), Some garnet localities of California: Mineralogist: 3(11): 23.

Rocks & Minerals (1939): 14: 337.

Bradley, W.W. (1940), Thirty-sixth report of the State Mineralogist: California Division Mines Report 36: 69.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume I, John Wiley & Sons, New York: 559-560.

Rynearson, Garn Arthur (1953), Geological investigations of chromite in California: Chromite deposits in the northern Sierra Nevada, California. California Division of Mines and Geology Bulletin 134, part 3 chapter 5: 239.

Anonymous (1957), World news on mineral occurrences: Rocks & Minerals: 32: 12.

Strunz, Hugo (1961), “Chromrutil” von der Red Ledge mine ist kein rutil. Redledgeite: Neues Jahrb. Mineral., Monatsh.: 107-111.

Strunz, Hugo (1963), Redledgeite, eine TiO2-einlagerungestruktur analog kryptomelan: Neues. Jahrb. Min. mh. 5: 116-119.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 118, 136, 137, 141, 143, 194, 203, 256, 319, 350.

Bancroft, Peter (1973) The World's Finest Minerals and Crystals. Viking Press: 154.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 130, 174, 434, 497.

Bancroft, Peter (1984) Gem and Crystal Treasures. Western Enterprises, Mineralogical Record: 15: 89.

Mineral List

Arsenopyrite Calcite Chromite Clinochlore var: Chromian Clinochlore

Copper Galena Gold Knorringite

Magnesiochromite Phengite var: Mariposite Pyrite Quartz

Redledgeite (TL) Rutile Stibnite Uvarovite

16 entries listed. 14 valid minerals. 1 type locality (valid mineral).