Borealis Mine & Mill

Site Name

Primary: Borealis Mine & Mill
Secondary: Borealis Mine
Secondary: James Ridge See Comments

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Commodity

Primary: Gold
Secondary: Mercury
Tertiary: Silver

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Location

State: Nevada
County: Mineral
District: Aurora Division, Aranka Goldfields

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Land Status

Land ownership: National Forest
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.

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Holdings

Type: Located Claim

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Workings

Type: Surface

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Ownership

Owner Name: Echo Bay Minerals Co.
Company ID: 2601655
Percent: 100.0
Home Office: Canada
Info Year: 1987

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Production

Year: 1986
Description: 1986 Gold Produced 1550 Kg Gold
Year: 1986
Description: 1986 Ore Processed No Ore Production (Tails)
Year: 1985
Description: 1985 Silver Produced 1478 Kg Silver
Year: 1985
Description: 1985 Gold Produced 1749 Kg Gold
Year: 1985
Description: 1985 Ore Processed 2037000 Mt Ore
Year: 1984
Description: 1984 Silver Produced 2328 Kg Silver
Year: 1984
Description: 1984 Gold Produced 1831 Kg Gold
Year: 1984
Description: 1984 Ore Processed 1296000 Mt Ore
Year: 1983
Description: 1983 Silver Produced 265 Kg Silver
Year: 1983
Description: 1983 Gold Produced 1012 Kg Gold
Year: 1983
Description: 1983 Ore Processed 273000 Mt Ore
Year: 1982
Description: 1 697 Kg Slver
Year: 1982
Description: 1982 Gold Produced 1244 Kg Gold
Year: 1982
Description: 1982 Ore Processed 404000 Mt Ore
Year: 1986
Description: 1986 Silver Produced No Silver Mentioned

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Deposit

Record Type: Site
Operation Category: Plant
Plant Type: Leach
Plant Subtype: Precipitation
Operation Type: Surface
Mining Method: Bench (Berm)
Milling Method: Leach-Solvent-Extract-Precipitation
Year First Production: 1981
Discovery Year: 1977
Years of Production:
Organization:
Significant: N

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Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin

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Mineral Deposit Model

Not available

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Orebody

Not available

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Structure

Not available

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Alterations

Not available

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Rocks

Not available

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Analytical Data

Not available

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Materials

Unknown: Pyrite
Unknown: Calcite
Unknown: Chlorite
Unknown: Gold
Unknown: Hematite
Unknown: Kaolinite
Unknown: Montmorillonite
Unknown: Quartz
Unknown: Silver
Unknown: Alunite

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Comments

Comment (Economic Factors): EQUIPMENT: HIMCO HAS SUBCONTRACTED THE MINING, HAULAGE OF ORE AND WASTE, MOVING OF CRUSHED ORE TO LEACH PADS, REMOVAL OF SPENT (LEACHED) ORE FROM LEACH PADS TO WASTE DUMPS, DRIL- LING OF OVERBURDEN AND ORE, AND BLASTING OF OVERBURDEN AND ORE TO AN OUTSIDE MINING CONTRACTOR (PRESENTLY PORTER AND MEIZNER OF BATTLE MTN, NV). THE CONTRACTOR FURNISHES ALL MOBILE MINING EQUIPMENT, DRILL RIGS, BLASTING EQUIPMENT AND SUPPLIES. THE CONTRACTOR PERFORMS ALL MAINTENANCE ON THE EQUIPMENT AND PURCHASES REPLACEMENT PARTS AND SUPPLIES. AN APPROXIMATE EQUIPMENT LIST INCLUDES: DESCRIPTION QUANTITY KOMATZU DOZER 1 (EQUIVLENT TO CAT D-9) FRONT-END LOADER 4 TEREX, 6.8 CU M TRUCKS 5 TEREX, 36 MT TRACTOR WITH TRAILER UNITS 7 31 TO 45 MT MOTOR GRADERS 2 CAT 14G WATER TRUCKS 2 DRILL, I-R T4 1 200 MM DIAMETER AN 8 CU YD CATERPILLER 988 FRONT-END LOADER OPERATED BY HIMCO DUMPS RUN-OF-MINE ORE INTO THE CRUSHING/AGGLOMERATION PLANT FEED HOPPER.

Comment (Reserve-Resource): M1C1=M1C2+M1C3 MATRIX ONE COLUMN ONE EQUALS MATRIX ONE COLUMN TWO PLUS MATRIX ONE COLUMN THREE. OVERALL RESOURCES ARE THOSE COMBINED FROM BOTH THE BOREALIS AND THE JAMIES RIDGE PITS. BOREALIS PIT JAMIES RIDGE PIT

Comment (Production): NOW DEPLETED - IN SHUTDOWN. CLOSED 1-90.

Comment (Economic Factors): HEAP LEACH OPERATION. MILL: ON-SITE, ACTIVE, AGGLOMERATION, CYANIDE HEAP LEACH, MERRILL-CROWE ZN PPT., 2270 T/D CRUSHER,34 KG EACH DORE BULLION SHIPPED BY AIR TO RENO, THEN ON TO HANDY & HARMON, MASS.

Comment (Production): 1988 PROD.= 60,000 OZ.AU; 1988 RESERVE= ONLY 167,010 CONT. OZ.AU 1989 PROD.= 89,000 OZ AU FROM LEACHING 2,209,000 MT ORE. 1989

Comment (Deposit): JAMES RIDGE IS ANOTHER DISCRETE ORE BODY,DISCOVERED IN 1982. LOCATED ABOUT 6 KM NE OF THE BOREALIS DEPOSIT.IT IS 250 M BY 100 M BY 30 M THICK AND WAS PLACED IN PRODUCTION IN APRIL 1983 AND MINED OUT IN 7 MONTHS. GENERAL SIZE OF ORE BODY: SMALL

Comment (Reserve-Resource): RESERVE = 0 (DEPLETED).

Comment (Location): GENERAL LOCATION: ABOUT 24 KM SW OF HAWTHORNE

Comment (Economic Factors): DORE BARS PRODUCED AT BOREALIS ARE PRESENTILY FLOWN TO RENO THEN SHIPPED TO ATTLESBORO, MASSACHUSETTS, WHERE HANDY AND HARMAN REFINE THE DORE TO 999+ GOLD AND 999+SILVER PRO- PRODUCTS.

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References

Reference (Deposit): FAST-TRACK APPROACH. HEAP AND DUMP LEACHING, V. 1,

Reference (Deposit): CALLICUTT, W. BOREALIS: THE ECONOMIC ADVANTAGES OF A

Reference (Deposit): IN 1988.

Reference (Deposit): JAN. 6, 1983, P. 3.

Reference (Deposit): NEVADA DEPT. OF ENVIRON. PROTECTION. MINE FILES. REVIEWED

Reference (Deposit): WALLACE (ID) MINER. ORE BODY FOUND AT BOREALIS.

Reference (Deposit): ANNU. MEETING, NEW ORLEANS, LA, 1982, P. 684.

Reference (Deposit): NEVADA (ABSTR.). GEOL. SOC. AM. ABSTR. WITH PROGRAMS,

Reference (Deposit): GEOLOGY OF THE BOREALIS GOLD DEPOSIT, MINERAL COUNTY,

Reference (Deposit): DIV. MINE INSP., 1983, 60 PP.

Reference (Deposit): STRACHEN, D. G., P. M. PETTIT, AND R. F. REID. THE

Reference (Deposit): ACTIVE DURING CALENDAR YEAR 1982. DEP. IND. RELATIONS, NV

Reference (Deposit): STATE OF NEVADA. DIRECTORY OF NEVADA MINE OPERATIONS

Reference (Deposit): OF TENNECO BEGINS OUTPUT. V. 70, NO. 52, 1981, P. 18.

Reference (Deposit): SKILLINGS' MINING REVIEW. BOREALIS GOLD/SILVER MINE

Reference (Deposit): BULL. 58, 1961, 98 PP.

Reference (Deposit): COUNTY, NEVADA. NV BUREAU OF MINES AND GEOL.

Reference (Deposit): 45, FEB. 1981, P. 58.

Reference (Deposit): ROSS, D. C. GEOLOGY AND MINERAL DEPOSITS OF MINERAL

Reference (Deposit): BEGIN DEVELOPMENT OF MAJOR NEVADA OPEN-PIT GOLD MINE. NO.

Reference (Deposit): NEW MEXICO PAYDIRT (BISBEE, AZ). HOUSTON MINERALS TO

Reference (Deposit): BULL., V. 6, NO. 2, 1982, PP. 14-15.

Reference (Deposit): GOLD MINE GEOLOGY DESCRIBED IN REPORT. NV MIN. ASSOC.

Reference (Deposit): HUANG, C. BIOGEOCHEMICAL AND SOIL GEOCHEMICAL

Reference (Deposit): THESIS, UNIV. NV, RENO, NV, 1964, 41 PP.

Reference (Deposit): THE AURORA MINING DISTRICT, MINERAL COUNTY, NEVADA. M.S.

Reference (Deposit): NEVADA MINING ASSOCIATION (RENO). HIMCO'S BOREALIS

Reference (Deposit): ASSOC. BULL., V. 5, NO. 6, 1981, PP. 10-11.

Reference (Deposit): OFFICIALS JOIN DEDICATION OF NEW BOREALIS MINE. NV MIN.

Reference (Deposit): V. 2, 1981, PP. 322-323.

Reference (Deposit): NEVADA MINING ASSOCIATION (RENO). SANTINI, HIMCO

Reference (Deposit): INDUSTRY OF NEVADA. CH. IN BUMINES MINERALS YEARBOOK,

Reference (Deposit): LOCKARD, D. W., AND J. H. SCHILLING. THE MINERAL

Reference (Deposit): PP. 1564-1565.

Reference (Deposit): DEVELOPMENT. MIN. ENG., V. 35, NO. 11, NOV. 1983,

Reference (Deposit): THE BOREALIS PROJECT: A FAST-TRACK APPROACH TO MINE

Reference (Deposit): LIGHTNER, F. H., R. L. FAVERTY, AND W. E. COUGHLIN.

Reference (Deposit): MAR. 25-28, 1984, PP. FT3 1-31.

Reference (Deposit): SYMP. OF ASSOC. EXPL. GEOCHEM., RENO, NV,

Reference (Deposit): CORDILLERA, FIELD TRIP GUIDEBOOK, ED. BY J. L. JOHNSON.

Reference (Deposit): EXPLORATION FOR ORE DEPOSITS OF THE NORTH AMERICAN

Reference (Deposit): METAL DISTRICTS IN SOUTHERN AND WESTERN NEVADA. PAPER IN

Reference (Deposit): TONOPAH DISTRICT, AND BOREALIS MINE, FIELD TRIP 3, PRECIOUS

Reference (Deposit): GOLDFIELD DISTRICT, HASBROUCK MOUNTAIN (DIVIDE DISTRICT),

Reference (Deposit): GARSIDE, L. J. ROAD LOG/TRIP GUIDE: STERLING MINE,

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

Reference (Deposit): GEOLOGY OF THE HAWTHORNE AND TONOPAH QUADRANGLES, NEVADA.

Reference (Deposit): FERGUSON, H. G., AND S. W. MULLER. STRUCTURAL

Reference (Deposit): NO. 1, JAN. 1984, PP. 3-4, 6.

Reference (Deposit): NO. 6, 1983, PP. 48-56.

Reference (Deposit): GOLD AND SILVER ORES. ENG. AND MIN. J., V. 184,

Reference (Deposit): LEWIS, A. LEACHING AND PRECIPITATION TECHNOLOGY FOR

Reference (Deposit): U.S. GEOL. SURV. BULL. 1384, 1975, 38 PP.

Reference (Deposit): GEOLOGY OF THE BODIE HILLS REGION, NEVADA AND CALIFORNIA.

Reference (Deposit): AEROMAGNETIC AND LIMITED GRAVITY STUDIES AND GENERALIZED

Reference (Deposit): W. CHESTERMAN, R. H. CHAPMAN, AND C. H. GRAY, JR.

Reference (Deposit): NV, MAR. 25-28, 1984, P. 24.

Reference (Deposit): KLEINHAMPL, F. J., W. E. DAVIS, M. L. CHESTERMAN, C.

Reference (Deposit): AMERICAN CORDILLERA. SYMP. OF ASSOC. EXPL. GEOCHEM., RENO,

Reference (Deposit): U.S.A. ABSTR. IN EXPLORATION FOR ORE DEPOSITS OF THE NORTH

Reference (Deposit): STUDIES AT THE BOREALIS MINE, MINERAL COUNTY, NEVADA,

Reference (Deposit): GREEN, W. R. STRUCTURAL CONTROL OF MINERALIZATION AT

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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.