Riley, Riley deposit

Deposit with commodities tungsten

More information at and near this site: W-NV00124

About this location

Feature ID W-Mo00458
Other names East vein (1); West vein (1)
Geographic coordinates -117.251, 41.1891
Point definition Same location as the Riley mine (Mf00422)
Reference Horton and San Juan (2020); 24k Points file
Date: 2020
Remarks (1) Stager and Tingley (1988)

Geologic information

Commodities tungsten
Valuable materials chalcopyrite; galena; scheelite; sphalerite
Associated materials garnet; molybdenite; pyrite; quartz
Mineralization style skarn
Host rock age Cambrian
Host unit name Preble Formation
Host lithologies granodiorite; limestone; shale; skarn; slate
Alteration contact metamorphism; skarn
Reference Hotz, P.E., and Willden, R., 1964, Geology and mineral deposits of the Osgood Mountains quadrangle, Humboldt County, Nevada: U.S. Geological Survey Professional Paper 431, 128 p., scale 1:62,500,

Deposit models and geoenvironmental models

Type Model Reference
Deposit model 14a - W skarn deposits Sherlock, M.G., Cox, D.P., and Huber, D.F., 1996, Known mineral deposits and occurrences in Nevada, in Singer, D.A., ed., An analysis of Nevada's metal-bearing mineral resources: Nevada Bureau of Mines and Geology Open-File Report 96-2, p. 10-1–10-38,
Geoenvironmental model Sn and (or) W skarn and replacement deposits Hammarstrom, J.M., Elliott, J.E., Kotlyar, B.B., Theodore, T.G., Nash, J.T., John, D.A., Hoover, D.B., and Knepper, D.H., Jr., 1995, Sn and (or) W skarn and replacement deposits, in du Bray, E.A., ed., Preliminary compilation of descriptive geoenvironmental mineral deposit models: U.S. Geological Survey Open-File Report 95-831, p. 54–61,

Resource estimate summaries

Date Description Class Type Material Contained Units
1943 Unclassified Unclassified ore tungsten trioxide (WO3) 90(calculated) tons

Detailed resource estimates

1943: Unclassified, Unclassified
Year of estimate 1943
Resource description Unclassified
Resource classification Unclassified
Material tungsten trioxide (WO3)
Material type ore
Material amount 15,000(calculated)
Amount units tons
Grade 0.6(calculated)
Grade units percent
Contained commodity 90(calculated)
Contained commodity units tons
Material amount SI 14,000(calculated)
Material amount SI units metric tons
Grade SI 0.48(calculated)
Grade SI units percent
Contained commodity SI 65(calculated)
Contained commodity SI units metric tons
Contained commodity element W
Remarks Mat_Amnt range of 10,000–20,000 tons; Grade range of 0.4–0.6 percent
Short reference Callaghan and others (1943)Page 8
Reference Callaghan, E., Vitaliano, C.J., Clabaugh, S.E., and Hobbs, S.W., 1943, Tungsten deposits of the Osgood Range, Humboldt County, Nevada: U.S. Geological Survey Open-File Report 43-12, 11 p.,

History of the site

Dates Status Detail Reference
1943 to 1945 Exploration Exploration from 1943 through 1945 Holmes (1946)

Geographic context based on the point coordinates