Mine detail: Golconda Tungsten Mine

Previously called 'Iron Mask Group, Rare Metals Corp. MinesNBMG Sample Site 2906'

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Location

Lat / long:

40.94322, -117.42902

Resource(M)

Primary:	Tungsten
Secondary:	Manganese
Ore:	Hollandite, Psilomelane, Pyrolusite
Gangue:	Goethite, Iron, Jarosite, Lepidocrocite
Orebody form:	BLANKETS AND VEINS
Discovery year:	1866

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer
First production started:	1893

Geology

Host type:	Gravel,Limestone
Alteration processes:	Silicification, Argillization And Pyritization Of Underlying Rocks

References

MRDS	M231257
DEP	10043948
Reference	{Deposit:: VANDERBURG, W.O., 1938, RECONNAISSANCE OF MINING DISTRICTS IN HUMBOLDT CO., NEV; U.S.B.M. INF. CIRC. 6995}{Deposit:: PENROSE, R.A.F, JR, 1893, A PLEISTOCENE MANGANESE DEPOSIT NEAR GOLCONDA, NEVADA: JOUR. GEOL., VOL. I, P. 275-282}{Deposit:: KERR, P.F., 1940, TUNGSTEN-BEARING MANGANESE DEPOSIT AT GOLCONDA, NEVADA: G.S.A. BULL. VOL. 51, P. 1359-1390}{Deposit:: RANSOME; F.L., & BURCHARD, E.F., 1920, CONTRIBUTIONS TO ECON. GEOL., PT. 1: U.S.G.S. BULL. 710}{Deposit:: WILLDEN, R., 1964, GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT CO., NEV; NEV. BUREAU OF MINES BULL 59.}{Deposit:: GARSIDE, L. J., 1984, FIELD EXAMINATION 30 SEP 84, AND SAMPLE ANALYSIS.}{Deposit:: S. E. G. GUIDEBOOK, 1980, UNPUB.}{Deposit:: SNYDER, W. S., 1978, MANGANESE DEPOSITED BY SUBMARINE HOT SPRINGS IN CHERT-GREENSTONE COMPLEXES, WESTERN U. S.: GE-OLOGY, V. 6, P. 741-744.}{Production:: WILLDEN, R., 1964 NBM BULL STAGER, H.K. (IN PREP JAN. 1984)}
Reporter	La Pointe, D.D., La Pointe, D. D.