Mine detail: Relief Canyon Mine

Previously called 'NBMG Sample Sites 2552, 2552, 2553Bohannan Fluorite Prospect.'

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Location

Lat / long:

40.20518, -118.17014

Resource(B)

Primary:	Gold, Silver
Secondary:	Fluorine-Fluorite
Tertiary:	Arsenic, Antimony, Mercury, Thallium
Ore:	Electrum, Gold, Silver
Gangue:	Calcite, Fluorite, Hematite, Pyrite, Quartz, Serpentine, Talc
Orebody form:	DISSEMINATED, STRATABOUND AND STRATA-CONFORMABLE MINERALIZATION
Discovery year:	1979

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Production years:	1984-1985; 1986-1990
First production started:	1984
Last production ended:	1990

Geology

Host rock:	Cane Spring Limestone;Grass Valley Shale;Natchez Pass Formation
Host type:	Limestone
Associated type:	Quartz Monzonite,Diorite
Structure:	Range Front Faults Terminate Ore To The West (Black Ridge Fault). The Dip Of The Brecciated Contact Between The Natchez Pass And Grass Valley Formations Varies And Has The Appearance Of A Ne-Sw Striking Anticline That Plunges To The Sw. A Small Fold Perpendicular To The Plane Of This Anticline Forms A Dome Over The Southerly Portion Of The Deposit.
Alteration processes:	Silicification, Argillization, Propylitization. See Geology Comments.

References

MRDS	M242418
DEP	10047165
Reference	{Analytical Data:: SAMPLES 2551-53: GEOCH EMISTRY DATABASE, NEVADA BUREAU OF MINES AND GEOLOGY. TYPICAL RANGES: WITTKOP, R. W., PARRATT, R. L., BRUCE, W. R., 1984, GEOLOGY AND MINERALIZATION AT THE RELIEF CANYON GOLD DEPOSIT, PERSHING COUNTY, NEVADA, PREPRINT NO. 84-100, SOCIETY OF MINING ENGINEERS OF AIME, LITTLETON, CO, 5 PP.}{Deposit:: FIANNACA, M. AND MCKEE, J., 1983, GEOLOGY AND DEVELOPMENT OF THE RELIEF CANYON GOLD DEPOSIT, PERSHING CO., NV; PAPER PRESENTED AT THE 89TH ANNUAL NORTHWEST MINING CONVENTION, SPOKANE, WA, 1983}{Deposit:: GEOLOGICAL SOCIETY OF NEVADA 1984 MEETING AND FIELD TRIP ROAD LOG, SEPT. 1984.}{Deposit:: DIVISION OF MINE INSPECTION, DEC. 1983, DIRECTORY OF NEVADA MINING OPERATIONS, ACTIVE DURING CALENDAR YEAR 1983.}{Deposit:: NBMG MAP 84, 1983, ACTIVE MINES AND OIL FIELDS}{Deposit:: LACANA GOLD INC * BROCHURE ON RELIEF CANYON MIN * OFFICIAL OPENING, OCT, 1984.}{Deposit:: PEGASUS GOLD, 1988, RELIEF CANYON MINE CIRCULAR (UNPUBLISHED VISITO * FACT SHEET).}{Deposit:: PEGASUS GOLD, INC., ANNUAL REPORTS FOR 1986, 1987, 1989, 1990.}{Deposit:: SOUTHERN PACIFIC CO., 1964, MINERALS FOR INDUSTRY-NORTHERN NEVADA AND NORTHWESTERN UTAH, SUMMARY OF GEOLOGICAL SURVEY OF 1955-1961, V. 1: SAN FRANCISCO, SOUTHERN PACIFIC CO, P. 45.}{Deposit:: WALLACE AND TATLOCK, 1962, SUGGESTIONS FOR PROSPECNG IN THE HUMBOLDT RANGE AND ADJACENT AREAS, NEVADA, USGS PP 450-B3-B5.}{Deposit:: WALLACE,. E., SILBERLING, N. J., IRWIN, W. P., AND TATLOCK, D. B., 1969, GEOLOGIC MAP OF THE BUFFALO MOUNTAIN QUADRANGLE, PERSHING AND CHURCHILL COUNTIES, NEVADA, USGS MAP GQ-821.}{Deposit:: TINGLEY, J. V., NEVADA BUREAU OF MINES AND GEOLOGY, COMPUTERIZED GEOCHEMISTRY DATABASE.}{Deposit:: JOHNSON, M. G., 1977, GEOLOGY AND MINERAL DEPOSITS OF PERSHING COUNTY, NEVADA, NBMG BULL. 89.}{Deposit:: HORTON, R.C., 1961, AN INVENTORY OF FLUORSPAR OCCURRENCES IN NEVADA, NBMG REPT. 1.}{Deposit:: ENGINEERING AND MINING JOURNAL, JUNE 1988, 45-46}{Deposit:: BONHAM, H.F.JR, AND HESS, R. H., 1992, BULK-MINEABLE PRECIOUS-METAL DEPOSITS, IN THE NEVADA MINERAL INDUSTRY 1991, NEVADA BUREAU OF MINES AND GEOLOGY, SPECIAL PUB., MI-1991, P24}{Deposit:: NBMG, 1994, MI-1993}{Production:: 1983-84 ANNUAL PRODUCTION: NBMG DISTRICT FILE BROCHURE. 1986-1990 ANNUAL PRODUCTION: PEGASUS GOLD, INC., ANNUAL REPORTS FOR 1986, 1987, 1989, 1990. 1987 GRADE DATA FROM E AND MJ. MI-1991 LISTS 1989 PRODUCON AS 30,266 OZ AU AND 32,835 OZ AG. MI-1993}{Reserve-Resource:: UNPUB. REPORT, 1983.}
Reporter	La Pointe, D.D. (Tingley, J.V.), Berger, Mary A., Phinisey, J. D. (Marcus, S.), Li, Zhiping (Moyer, Lorre A.)