Mine detail: Aurora District-Nevada

Previously called 'Silver HillUtah MineAntelope MineGaribaldi MineChihuahua MinePond MineJohnson MineWide West MineDel Monte MineJuniata MineProspectus VeinHumboldt VeinHumboldt West and Humboldt East ClaimsOld Humboldt Mine AreaCambridgeEsmeraldaMiddle HillLast Chance HillAurora MineAurora Partnership Mine'

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Location

Lat / long:

38.28632, -118.90176

Resource(M)

Primary:	Gold, Silver
Discovery year:	1860

Production

Operation type:	Unknown
Deposit type:	EPITHERMAL VEINS, TYPICALLY WITH LITTLE OR NO KNOWN WALLROCK DISSEMINATION.
Production size:	Large
Development status:	Producer
First production started:	1860

Geology

Structure:	STEEP N-S STRIKING FAULTS OFFSET THE MINERALIZED NE-STRIKING FAULTS., A YOUNG, LESS THAN 3 MA OLD, BROAD REGIONAL UPWARP EXTENDS FORM THE SOUTHWEST OF THE BODIE HILLS THROUGH THE BODIE DISTRICT TO THE AREA OF THE AURORA DISTRICT. THIS UPWARP MAY CONTINUE TO THE NORTHEAST, SOUTH OF THE BOREALIS MINE.
Alteration processes:	PROGRESSIVE WEAK PROPYLITIC, STRONG PROPYLITIC, QUARTZ-ILLITE ALTERATION SURROUNDING SILICIFICATION IN THE MINERALIZED FAULTS.

References

MRDS	W002908
DEP	60001663
Reference	{Deposit:: ROSS, D.C., 1961, GEOLOGY AND MINERAL DEPOSITS OF MINERAL COUNTY, NEVADA: NBMG BULL S8}{Deposit:: HILL, J.M., 1915, SOME MINING DISTRICTS IN NORTHEASTERN CALIFORNIA AND NORTHWESTERN NEVADA: USGS BULL 594}{Deposit:: FERGUSON, H.G., 1929, THE MINING DISTRICTS OF NEVADA: ECON GEOL, V. 24, NO. 2, P 115-48.}{Deposit:: GREEN, W.R., 1962, STRUCTURAL CONTROL OF MINERALIZATION AT THE AURORA MINING DISTRICT, MINERAL COUNTY, NEVADA: M.S. THESIS, UNIV. OF NEVADA.}{Deposit:: VANDERBURG, W.O., 1937, RECON. OF MINING DISTRICTS IN MINERAL COUNTY, NEVADA: U.S. BUREAU OF MINES INF. CIRC. 6941, 79P.}{Deposit:: KOSCHMANN, A.H. AND BERGANDAHL, M.H., 1968, PRINCIPAL GOLD-PRODUCING DISTRICTS OF THE U.S.: USGS PROF. PAPER 610, P.188.}{Deposit:: UNCOLN, F.C. 1923, MINING DIST. OF NEVADA: RENO, NEVADA NEWSLETTER PUB. CO. 137-8.}{Deposit:: STATE DIVISION OF MINE INSPECTION, DEC. 1983, DIRECTORY OF NEVADA MINE OPERATIONS ACTIVE DURING CALENDAR YEAR 1983.}{Deposit:: NBMG MINING DISTRICT FILES, FILE 189, PRESS CLIPPINGS.}{Deposit:: OSBORNE, M.A., 1991, EPITHERMAL MINERALIZATION AT AURORA, NEVADA: PROCEEDINGS OF THE GSN 1990 SYMPOSIUM, P. 1097-1110.}{Deposit:: NBMG, 1990, THE NEVADA MINERAL INDUSTRY 1990: NBMG SPECIAL PUBLICATION MI-1990, P. 23.}{Deposit:: NBMG, 1994, MI-1993}{Deposit:: NEVADA DIVISION OF MINERALS, 1994}