Hall Molybdenum Mine

Site Name

Primary: Hall Molybdenum Mine
Secondary: Cyprus Tonopah
Secondary: Chicago Group
Secondary: Treasure Hill Group
Secondary: Nevada Moly Project
Secondary: Equatorial Copper Mine
Secondary: Tonopah Copper Mine
Secondary: Hall-Hand Property
Secondary: Hall Moly
Secondary: Liberty Mine
Secondary: Hall Copper
Secondary: San Antonio Mine
Secondary: Anaconda-Nevada Moly Prospect

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Commodity

Primary: Copper
Primary: Molybdenum
Secondary: Silver
Secondary: Gold

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Location

State: Nevada
County: Nye
District: San Antone District

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Land Status

Land ownership: BLM Administrative Area
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: Tonopah BLM district

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Holdings

Not available

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Workings

Type: Underground

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Ownership

Owner Name: Cyprus Tonopah Mining Corp.
Company ID: 2602069
Home Office: Nevada
Info Year: 1996
Years: 1988 -

Owner Name: Cyprus Amax Minerals Co.
Percent: 100.0
Home Office: Colorado
Info Year: 1996
Years: 1988 -

Owner Name: Anaconda Copper Co., Tom Parker, Project Manager
Home Office: P. O. Box 1268, Tonopah, NV 89049
Years: 1984 -

Owner Name: Equatorial Mining North America, Inc.
Info Year: 2004

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Production

Not available

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Deposit

Record Type: Site
Operation Category: Producer
Deposit Type: vein, porphyry, pluton-related
Plant Type: Beneficiation (Mill)
Operation Type: Surface-Underground
Mining Method: Combined Methods
Milling Method: Flotation
Year First Production: 1979
Year Last Production: 1991
Discovery Year: 1863
Years of Production:
Organization:
Significant: Y
Deposit Size: S

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Physiography

Not available

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Mineral Deposit Model

Model Name: Porphyry Mo, low-F

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Orebody

Form: small flakes, bunches, thin coatings

Not available

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Structure

Type: L
Description: sheared contact zone

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Alterations

Alteration Type: L
Alteration Text: Alteration types affecting host rocks are sericitization, kaolinization, silicification. Orebody is oxidized to about 150 feet in depth.

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Rocks

Name: Alkali-Granite (Alaskite)
Role: Associated
Age Type: Associated Rock
Age in Years: 77.000000+-2.000000
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Description: stock
Age Type: Associated Rock
Age in Years: 77.000000+-2.000000
Age Young: Late Cretaceous

Name: Schist
Role: Host
Description: quartz mica
Age Type: Host Rock
Age Young: Early Triassic
Age Old: Permian

Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Early Triassic
Age Old: Permian

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Analytical Data

Not available

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Materials

Ore: Molybdenite
Ore: Sphalerite
Ore: Pyrrhotite
Ore: Galena
Ore: Azurite
Ore: Malachite
Ore: Chalcocite
Ore: Ilsemannite
Ore: Powellite
Ore: Chalcopyrite
Ore: Ferrimolybdite
Gangue: Quartz
Gangue: Sericite
Gangue: Limonite
Gangue: Chalcopyrite
Gangue: Pyrite

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Comments

Comment (Reserve-Resource): Anaconda Nevada Moly record - ALTERNATE NAME - HALL COPPER. FORMERLY LISTED AS SEQ#0320230159 COMPANY SAYS DEPOSIT HAS ESTIMATED MININIM RESERVES OF 150 MILLION S.T. EXPECTS TO EXTRACT 6000 STPY MOLYBDENUM OVER 20 YEARS. ALSO CALLED HALL MOLYBDENUM. CYPRUS MINERALS COMPANY PLANNED TO OBTAIN APPROVAL TO ACQUIRE CONTROL OF THE TONOPAH MINE, MJ 4/29/88.PURCHASE IS COMPLETE PER J.BLOSSOM 8/29/88.PER 9/88 PAYDIRT TONOPAH COULD PRODUCE 2-3 MM LBS MO IN 4TH QTR 1988 MINE IN CARE & MAINT STATUS AS OF 1991.

Comment (Reserve-Resource): From the Anaconda Nevada Moly record - EIGHTY PERCENT OF RESOURCE IS IN THE QTZ. PORPHYRY INTRUSIVE

Comment (Geology): From the Anaconda Nevada Moly record - CREEDITE IS ALSO PRESENT.

Comment (Geology): From the Anaconda Nevada Moly record - QUARTZ MONZONITE IS REALLY A QUARTZ PORPHYRY. UNSPECIFIED METAMORPHIC IS REALLY METAMORPHOSED SEDIMENTS.

Comment (Deposit): Ore minerals are disseminated in a massively developed irregular stockwork zone of quartz veins and pods enveloping the marginal zone of a quartz monzonite porphyry pluton, and, to some extent, including the adjacent country rocks. One high-grade portion of the deposit forms a tabular orebody 50-75 feet wide and 1500 feet long. The original quartz monzonite porphyry pluton has been highly altered to quartz-sericite-pyrite clay minerals assemblage. The top 100-250 feet of the deposit is an oxidized zone with copper carbonate mineralization. Molybdenite is disseminated throughout the altered quartz monzonite porphyry and occurring in two zones. The first is from the surface to 500 feet deep and the second is 900 to 1200 feet deep. The ore body is elliptical in shape and dips slightly east. Molybdenite occurs as rosettes, not evenly distributed throughout the intrusive, but concentrated in both horizontal and vertical zones. Copper occurs only in the shallower oxidized zones of the deposit. Gold and silver are present only in small amounts.

Comment (Development): The area near Liberty Springs, a mile south of the Hall mine area, was the site of sporadic silver mining from 1876 to around 1900, producing about 100,000 ounces of silver. Clarence Hall developed an underground silver mine on the property that later became the Hall deposit. It was explored by U.S. Vanadium Corp in 1935-38, by the USBM in 1942, and by the Metals Reserve Corp. (Desert Silver Inc.) in 1943. During World War II, the Hall deposit was identified as a molybdenum resource with 354 feet of diamond drilling completed on the property by 1945. Anaconda Company procured the deposit in 1956 and outlined the molybdenum orebody in the 1970s. Anaconda applied for patent on 19 of the key claims of the property in 1969 and was granted patents on 18 of the claims in 1970. Economic feasibility studies were done in 1978, production started in 1979 and lasted through 1985. In 1981, over 1000 persons were employed in development and construction at the site. The property was listed as an active open pit mine and mill, flotation, tank leach operation in 1983, employing a total of 306 persons. Subsequently the property was sold to Cyprus Metals who reopened the mine in 1986 and operated it through 1991. Equatorial Mining North America, Inc. acquired property adjacent to the site of the former Hall Molybdenum Mine in 1997 and in 1999 opened it as an open pit heap-leach copper mine. Equatorial's copper operation closed in 2001 and is undergoing reclamation. Efforts are currently (2004) being made to use some of the facilities at the site for renewable energy production (solar and wind).

Comment (Commodity): Ore Materials: molybdenite, chalcopyrite, ferrimolybdite, powellite, ilsemannite , chalcocite, malachite, azurite

Comment (Commodity): Gangue Materials: pyrite, chalcopyrite, limonite, sericite, quartz

Comment (Economic Factors): The molybdenum orebody as delineated in the 1940s on the 280 foot level contained 1.3 million tons of developed and indicated ore averaging 0.37 % molybdenum sulfide. Anaconda's patent application report in 1970 contains an estimate of 123 million tons of proven ore with an average grade of 0.126 % molybdenum sulfide and 0.1 % copper. Equatorial's drilling and geologic evaluation completed through 1999 resulted in a proven ore reserve of 98 million tons at 0.343% total copper. The total copper resource was estimated at 137.8 million tons averaging 0.314% total copper. The total amount of copper and molybdenum production from the deposit is unknown. Hall is considered by the USGS to be one of the ?Giant Porphyry-Related Metal Camps of the World?

Comment (Identification): This record supersedes MRDS record #M231757 from which all material has been incorporated into the current record, as well as additional new material.

Comment (Location): The deposit is located on the west flank of the San Antonio Mountains, about one mile north of the Liberty Mine.

Comment (Workings): Workings consist of a 310-foot 65 degree inclined shaft, a 180-foot vertical shaft, a 150-foot vertical shaft and an open pit more than a half mile in diameter.

Comment (Deposit): From the Anaconda Nevada Moly record - GENERAL LOC.:ABOUT 27 KM NW OF TONOPAH. MINING METHOD:OPEN PIT,CONVENTIONAL TRUCK AND SHOVEL WITH 14 M BENCHES. THE MILL IS LOCATED ON-SITE. MILLING METHOD:TWO PRODUCT BULK FLOATATION. PROCESS RATE:20,000 T/D (AT FULL CAPACITY). THE COPPER ORE OF THE UPPER ZONE WILL BE STRIPPED AND STOCKPILED PRIOR TO MINING THE MOLYBDENUM ORE. BECAUSE OF COMPLEX METALURGICAL PROBLEMS ENCOUNTERED IN PROCESSING COPPER ORE FROM THE OXIDIZED UPPER ZONE, IT IS ASSUMED THAT THE COPPER ORE WILL BE PROCESSED AT A LATER DATE. ELECTRICITY WILL BE MADE AVAILABLE AT THE SITE BY CON- STRUCTING 138 KILOMETERS OF POWER LINES. WATER SUPPLY WILL COME FROM WELLS LOCATED ON THE PROPERTY. MAXIMUM EMPLOYMENT WILL BE 936 EMPLOYEES AND WILL DECREASE TO 400 EMPLOYEES AT START-UP. LABOR IS NOT AVAILABLE AT THE MINE-SITE AND A TOWNSITE OF 243 HECTARES WILL BE CONSTRUCTED CONTIGUOUS TO TONOPAH, NEVADA. THE LAND WILL BE MADE AVAILABLE FOR PURCHASE BY QUALIFIED CONTRACTORS. ANACONDA OWNS 4228 HECTARES; 2193 HECTARES ARE HELD BY MINING CLAIMS OR PATENTS, 2034 HECTARES ARE HELD BY FEE OWNERSHIP. 1985 UPDATE MINE AD MILL CAME ON-LINE IN 1981. FULL PRODUCTION CAPACITY (20,000 T/D),ACHIEVED DEC. 1981. OPERATIONS SUSPENDED 3RD QUARTER 1982;REOPENED 4TH QUARTER. SUSPENDED OPERATIONS DEC. 1982.REOPENED OCT. 1983. PRODUCED FROM OCT. 1983 - JAN. 1985. OPERATIONS SUSPENDED JAN. 1985 FOR INDEFINITE PERIOD. ANACONDA MINERALS WENT OUT OF EXISTENCE IN JUNE 1985. ARCO CURRENTLY ( AUG.1985 ) LOOKING FOR BUYER FOR NEVADA MOLY PROPERTY.

Comment (Geology): From the Anaconda Nevada Moly record - GENERAL SIZE OF ORE BODY - LARGE. ORE ALSO CONTROLLED BY FAULTING. DIP OF MINERALIZED ZONE RANGES FROM 15-50 DEG. EAST. THE DEPOSIT IS LOCATED WITHIN A LARGE WELL-DEFINED QUARTZ MONZONITE INTRUSIVE STOCK. THE ORE BODY IS PIPE- LIKE; THE WEST SIDE IS CUT BY A NORMAL FAULT AND DOWN DROPPED TO THE WEST. THE DEPOSIT IS DIVIDED INTO THREE ZONES; UPPER, MIDDLE, AND LOWER. THE UPPER ZONES ARE EXPOSED IN THE WEST AND CENTRAL PORTIONS, AND COVERED IN THE EAST BY A SERIES OF VOLCANICS. THE UPPER ZONE IS ALMOST ENTIRELY EXPOSED AND RANGES IN DEPTH FROM ZERO METERS ON THE WEST TO 240 METERS ON THE EAST. IT IS AN OXIDIZED ZONE MADE UP OF COPPER MINERALS IN QUARTZ MONZONITE, AND CONSTITUTES THE COPPER ORE BODY. THE UPPER ZONE MUST BE STRIPPED TO MINE THE MOLYBDENUM ORE BODY. THE AMOUNT OF SUPERGENE ENRICHMENT IS INCONSEQUENTIAL. THE RELATIVE PROPORTIONS OF THE VARIOUS MINERAL COMPONENTS MUST REMAIN CONJECTURAL. THE MIDDLE ZONE LIES IMMEDIATELY BELOW THE UPPER ZONE, IS APPROXIMATELY 150 METERS THICK, AND RAKES TO THE EAST AT 15 DEGREES. IT IS UNOXIDIZED AND IS COMPOSED OF CHALCOCITE AND MOLYBDENITE IN QUARTZ MONZONITE. THE MIDDLE ZONE CONSTITUTES THE MAIN MOLYBDENUM ORE BODY. THE LOWER ZONE IS SEPARATED FRM THE MIDDLE ZONE BY 120 METERS OF BARREN ROCK. IT IS APPROXIMATELY 90 METERS THICK AND IS MADE UP OF MOLYBDENITE IN QUARTZ MONZONITE.

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References

Reference (Deposit): STATE OF NEVADA. DIRECTORY OF MINE OPERATIONS ACTIVE DURING CALENDAR YEAR 1982, COMPILED BY DIVISION OF MINE INSPECTION, 1983, 60P.

Reference (Deposit): SCHILLING, THE NEVADA MINERAL INDUSTRY, NBMG, 1980, P. 37

Reference (Deposit): Kral, V.E., 1951, Mineral Resources of Nye Co.: NBMG Bull. 50, Vol. 45, No. 3, p. 159-160

Reference (Deposit): Mitchell, W.D., 1945, Oxidation in a Molybdenite Deposit: Econ. Geol., vol. 40, no. 2, p. 99-114.

Reference (Deposit): Kleinhampl, F.J. and Ziony, J.I., 1984, Geology and Mineral Deposits of Northern Nye Co.: NBMG Bulletin 99B.

Reference (Deposit): Anderson, C.A. and Cox, M.W., 1943, Geology of the Hall Molybdenum Property, Nye Co., NV: USGS OFR. 11 pp.

Reference (Deposit): Reno Evening Gazette, Dec. 28, 1979.

Reference (Deposit): Mining Record, Sept 5, 1979.

Reference (Deposit): NBMG Map 84, 1983, Active Mines and Oil Fields

Reference (Deposit): Division of Mine Inspection, 1983, Directory of Nevada Mine Operations Active During Calendar Year 1983.

Reference (Deposit): Handout for Nevada Mining Association tour, Sept 23, 1983.

Reference (Deposit): Carten, R.B., White, W.H., and Stein, H.J., 1995, High-grade granite-related Mo systems; classification and origin, in Kirkham, R.V., Sinclair, W.D., Thorpe, R.I., and Duke, J.M., eds., Mineral deposit modeling: Geological Association of Canada Special Paper 40, p. 521-554.

Reference (Deposit): Shaver, S.A., 1986, Elemental dispersion associated with alteration and mineralization at the Hall (Nevada Moly) quartz-monzonite type porphyry molybdenum deposit, with a section on comparison of dispersion patterns with those from Climax-type deposits: Journal of Geochemical Exploration, v. 25, p. 81-98.

Reference (Deposit): Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Database of significant deposits of gold, silver, copper, lead, and zinc in the United States; Part A, Database description and analysis; part B, Digital database: U.S. Geological Survey Open-File Report 98-206, 33 p., one 3.5 inch diskette.

Reference (Deposit): NBMG MI-1999-MI-2003.

Reference (Deposit): Felix E. Mutschler, Steve Ludington, and Arthur A. Bookstrom, 1999, Giant Porphyry-Related Metal Camps of the World-A Database; USGS Open-File Report 99-556.

Reference (Deposit): GEOLOGIC MAP OF NORTHERN NYE COUNTY, NEVADA. U.S. GEOL. SURV. OPEN-FILE MAP, 1967, SCALE 1:200,000.

Reference (Deposit): LOWE, NATHAN T. AND WILLIAM L. RICE. NEW RUTH AND OTHER COPPER RESOURCES ROBINSON MINING DISTRICT WHITE PINE COUNTY, NEVADA. MAS DEPOSIT SUMMARY REPORT, U.S. BUMINES, 1979, PP. 61.

Reference (Deposit): LOWE, NATHAN T. YERRINGTON COPPER MINE LYON COUNTY, NEVADA. MAS DEPOSIT SUMMARY REPORT, U.S. BUMINES, 1978, PP. 29.

Reference (Deposit): WOODCOCK, J. R. MOLYBDENUM - A GUIDE TO NORTH AMERICA RESOURCES AND ONGOING PLANS FOR DEVELOPMENT. ENG. AND MINING JOURN. VOL. 180, NO. 8, AUG. 1979, P. 86-89.

Reference (Deposit): ATLANTIC RICHFIELD CO.-ANACONDA MINERALS CO. MERGER. ANACONDA COMPANY. HALL PROPERTY. AN ANACONDA COMPANY MEMORANDUM. 1979, P. 1-3.

Reference (Reserve-Resource): VALENTI, P. B., C. I. WILMOT, AND R. A. HEIG. ANACONDA NEVADA MOLYBDENUM PROJECT. SOC. MIN. ENG. AIME. PREPRINT 83-141, 1983, 7 PP.

Reference (Deposit): LOWE, NATHAN T. AND WILLIAM L. RICE. VICTORIA COPPER MINE ELKO COUNTY, NEVADA. MAS DEPOSIT SUMMARY REPORT, U. S. BUMINES, 1978, PP. 42.

Reference (Deposit): IC 7784, 1957, PP. 1-77.

Reference (Deposit): HORTON, F.W. MOLYBDENUM; ITS ORES AND THEIR CONCENTRATION. U. S. BUMINES BULL. III, 1916, P 1-132.

Reference (Deposit): FERGUSON, H.G. AND S. W. MULLER STRUCTURAL GEOLOGY OF THE HAWTHORNE AND TONOPAH QUADRANGLES, NEVADA. U. S. GEOL. SURVEY PROF. PAPER 216, 1949, 55 PGS.

Reference (Deposit): INVESTIGATIONS OF MOLYBDENUM DEPOSITS IN THE CONTERMINOUS UNITED STATES, 1942-1960. UNITED STATES GEOLOGICAL SURVEY BULLETIN 1182-E, 1965, PP. E73-E78.

Reference (Deposit): INTERMOUNTAIN PAYDIRT (BISBEE, AZ). ANACONDA TO GAMBLE, PLANS TO RESTART TONOPAH MOLY OPERATION. NO. 45, JUNE 1983, P. 16A.

Reference (Deposit): ERVINE, WARREN BASIL. THE GEOLOGY AND MINERAL ZONING OF THE SPANISH BELT MINING DISTRICT, NYE COUNTY, NEVADA. DISS. ABSTR. INT., 1973, V. 34, NO. 3, P. 1150B-1151B

Reference (Deposit): SCHILLING, J. H. AN INVENTORY OF MOLYBDENUM OCCURANCES IN NEVADA. NEV. BUREAU OF MINES AND GEOL. REPT. 2, 1962, P. 35.

Reference (Deposit): ENGINEERING & MINING JOURNAL. E & MJ AT PRESSTIME. ANACONDA PLANS NEVADA'S LARGEST MINING INVESTMENT IN 50 YEARS; ENG. AND MINING JOUR., FEBRUARY 1980, PP. 9-10.

Reference (Deposit): BUREAU OF MINES HALL MOLYBDENUM PROPERTY. U. S. BUMINES WAR MINERAL REPORT 196, 1943, P. 1-13.

Reference (Deposit): WRIGHT, W.A. MOLYBDENITE MINERALIZATION AT THE HALL PROPERTY, NYE COUNTY, NEVADA. GEOL. SOC. AMER., ABSTRA., VOL. 8, NO. 6, 1976, P. 1176-1177.

Reference (Deposit): SPANISH BELT MINING DISTRICT, NYE COUNTY, NEVADA. PH.D. DISS., STANFORD UNIV., STANFORD, CA, 1972, 258 PP.

Reference (Deposit): KIRKEMO, H., C. A. ANDERSON, AND S. C. CREASEY. INVESTIGATIONS OF MOLYBDENUM DEPOSITS IN THE CONTERMINOUS UNITED STATES, 1942-60. U. S. GEOLOGICAL SURVEY BULL. 1182-E, 1965, P. E73-E78.

Reference (Deposit): THE WALLACE MINER. DEVELOPMENT OF BIG MOLY MINE IN NEVADA NEARS REALITY. THE WALLACE MINER. VOL. 73, NO. 25, JULY 12, 1979, P. 1.

Reference (Deposit): WORLD MINING - UNITED STATES: NEVADA; DUVAL DISCOVERS SILVER AND GOLD NEAR BATTLE MOUNTAIN. V. 35, NO. 1, 1982, P. 35.

Reference (Deposit): NEVADA MINING ASSOCIATION (RENO). U.V. INDUSTRIES, COLBY MINES DRILL FOR MOLY MINERALIZATION. NV MIN. ASSOC. BULL., V. 2, NO. 10, Oct. 1978, PP. 12-13.

Reference (Deposit): REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933. FORM S-14, ATLANTIC RICHFIELD COMPANY MERGER WITH THE ANACONDA COMPANY. SEPT. 1976, P 82-83.

Reference (Deposit): WORLD MINING - UNITED STATES: NEVADA; NEVADA MAY BE THE NEXT BIG MOLYBDENUM PRODUCER. V.34, NO.12, 1981, P.77.*

Reference (Deposit): MINERALIZATION. ABSTR. IN EXPLORATION FOR ORE DEPOSITS OF THE NORTH AMERICAN CORDILLERA. SYMP. OF ASSOC. EXPL. GEOCHEM., RENO, NV, MAR. 25-28, 1984, P. 28.

Reference (Deposit): BUREAU OF LAND MANAGEMENT. DRAFT ENVIRONMENTAL IMPACT STATEMENT ANACONDA NEVADA MOLY PROJECT. U. S. BLM, 1979, 148 P.

Reference (Deposit): ENVIRONMENTAL RESEARCH AND TECHNOLOGY. GEOLOGY AND GROUND WATER TECHNICAL REPORT. PREPARED FOR ANACONDA COPPER COMPANY BY ENVIRONMENTAL RESEARCH AND TECHNOLOGY, INC., FORT COLLINS, COLORADO, 1980.

Reference (Deposit): WIMLER, NORMAN L. HALL MOLYBDENUM PROPERTY NYE COUNTY, NEVADA. WAR MINERALS MEMORANDUM. U. S. BUMINES, 1942, 11 PGS.

Reference (Deposit): U.S. GEOL. SURV. PROF. PAPER 216, 1949, 55 PP.

Reference (Deposit): MERWIN, R.W. FIELD TRIP TO NORTHEASTERN NEVADA, MARCH 15-21 MINERAL DEPOSIT INVESTIGATIONS. U. S. BUMINES INTRA-OFFICE MEMORANDUM. APRIL 16, 1970, 3 PGS.

Reference (Reserve-Resource): KEITH LONG'S NAT. ASSESSMENT, 1995 DEPOSIT DATA BASE, #242, PP. 70-72.

Reference (Deposit): RANDOL MINING DIRECTORY, 1996/97, U.S. MINES AND MINING COMPANIES, P275.

Reference (Deposit): NEVADA MINING ASSOCIATION (RENO). ANACONDA'S MOLY PROPERTY GETS ANOTHER EVALUATION. NV MIN. ASSOC. BULL., V.

Reference (Deposit): RANDOL MINING DIRECTORY, 1994/95, U.S. MINES AND MINING COMPANIES, P355.

Reference (Deposit): STRAMM ENGINEERS, INC. CAPITAL AND OPERATING COST ESTIMATING SYSTEM HANDBOOK, U.S. BUMINES CONTRACT NO. J02550261

Reference (Deposit): ENGINEERING & MINING JOURNAL. E & MJ THIS MONTH IN MINING, ANACONDA'S NEVADA MOLY PROJECT TO GO ON STREAM IN FALL OF 1981. ENG. AND MINING JOUR., MARCH 1980, P. 39 & P. 43.

Reference (Deposit): NEVADA MINING ASSOCIATION. FTC MOVE HUGE NEVADA 'MOLY' MINE CLOSER TO REALITY. NEV. MINING ASSOC. BULL. VOL. 3, NO. 7, JULY 1979, P 3-4.

Reference (Deposit): NEV. BUREAU OF MINES AND GEOL. SPECIAL PUBLICATION 10, 1990, P. 21.

Reference (Deposit): MC INNIS, WILMER. MOLYBDENUM A MATERIALS SURVEY. U. S. BUMINES INF. CIRC. 7784, P. 1-77.

Reference (Deposit): SHAVER, S. A. ELEMENTAL DISPERSION AT THE HALL (NEVADA MOLY) PORPHYRY MOLYBDENUM DEPOSIT, NYE COUNTY, NEVADA MINING ASSOCIATION. ANACONDA'S MOLY PROPERTY GETS ANOTHER EVALUATION. NEV. MINING ASSOC. BULL. VOL. 2, NO. 6, JULY 1978, P 11.

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Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.