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Marigold Mine

Producer in Humboldt county in Nevada, United States with commodities Gold, Silver, Arsenic, Antimony, Mercury, Barium-Barite, Manganese
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Ownership information
  19. Production statistics
  20. Reserves and resources
  21. Workings at the site
  22. Links to other databases
  23. Bibliographic references
  24. General comments
  25. Reporter information

Geologic information

Identification information

Deposit ID 10310301
MRDS ID M231264
Record type Site
Current site name Marigold Mine
Alternate or previous names 8 South, 8 North, 5 North, 5 Northeast, Top, Red Rock, East Hill, East Hill South, 30, 30 Northeast, 32 South, Pond, Ridge, 6, Deep 8, Antler, Basalt, Terry, Emma, Lillian, Mayflower, Opal, Valmy, East Canyon, 31 South Gold Zone, 31 North Gold Zone, Trout Creek Prospect, Horton Mine 0230130085, Old Historic Marigold

Comments on the site identification

  • This record incorporates all material from earlier record for the historic Marigold Mine deposit, MRDS #M231264 as well as additional material.
  • The Cox and Singer B-1693 publication lists two Marigold deposits: 8 South Zone and East Hill Zone. The Graney and McGibbon 1991 map depicts 10 Marigold orebodies extending over a length of some 10 km. The northern and middle groups correspond to the two Cox and Singer orebodies - and 8 South Zone and East Hill Zone respectively. There is a 1 km gap between the two groups in the Graney and McGibbon map. However, recent satellite imagery suggests a more continuous mining operation, so this record merges the two Cox and Singer orebodies, and all the Graney and McGibbon orebodies. Locations are given for 11 orebodies and the mill site.
  • The Valmy mine is geographically part of the Marigold orebody, but owned and operated separtely as part of the Trenton Canyon mine 10310473.

Geographic coordinates

Point of reference Geographic coordinates: Elevation UTM Precision Relative position Point location
Ore Body -117.169, 40.7359 (WGS84) 100 Marigold Top Zone orebody.
(click for info)
Ore Body -117.171, 40.7237 (WGS84) 1550 Marigold East Hill orebody. The Marigold Mine is located about 12 miles NW of Battle Mountain, Nevada, 5 miles south of the Valmy Exit of Interstate 80.
Ore Body -116.19869, 40.6102 (WGS84) 100 Old Marigold. Also the site of recent open pit mining.
Ore Body -117.1759, 40.7286 (WGS84) 100 Marigold Red Rock orebody.
Ore Body -117.15, 40.74 (WGS84) 100 Marigold 8 South orebody.
Ore Body -117.163, 40.745 (WGS84) 100 Marigold 8 North orebody.
Ore Body -117.162, 40.7667 (WGS84) 100 Marigold 5 North orebody.
Ore Body -117.1519, 40.7724 (WGS84) 100 Marigold 5 Northeast orebody.
Plant -117.1484, 40.7493 (WGS84) 100 Marigold mill.
Ore Body -117.1716, 40.6879 (WGS84) 100 Marigold 31 North orebody.
Ore Body -117.1785, 40.681 (WGS84) 100 Marigold 31 South orebody.
Ore Body -117.1716, 40.7045 (WGS84) 100 Marigold 30 gold zone.

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

North Peak(quadrangle 1:24,000 scale)

Winnemucca(quadrangle 1:100,000 scale)

Winnemucca(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Humboldt(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

Bureau of Land Management NV BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Humboldt

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 033N 043E 05 08 18 19 Nevada

Comments on the location information

  • Marigold mine lies along the NW flank of Battle Mountain., just off the NE end of Buffalo Mountain UTM is to the current Marigold Mine, not the historic workings which lie farther to the east? the mine developments are spread over a few square miles with the bulk of the workings in section 18.

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Arsenic Critical Tertiary
Antimony Critical Tertiary
Mercury Tertiary
Barium-Barite Critical Tertiary
Manganese Critical Tertiary

Comments on the commodity information

  • Ore Materials: gold
  • Gangue Materials: barite, calcite, jarosite, hematite, limonite

Materials information

Materials Type of material
Gold Ore
Barite Gangue
Calcite Gangue
Jarosite Gangue
Hematite Gangue
Limonite Gangue

Alteration

  • (Local) Host rocks have been subjected to decarbonation, argillization, silicification, and supergene oxidation. Partial removal of carbonate from originally calcareous rocks preceded gold mineralization and resulted in increased porosity and permeability. In some ore zones, intensely argillized rocks above and below mineralization may have served as impermeable seals to confine later gold-bearing hydrothermal fluids. Silicification may be coeval with gold deposition and is represented by local replacement of favorable lithologies and jasperoid development in fault zones. Oxidation is thought to be supergene, but the possibility of hypogene oxidation is not ruled out.

Analytical data

Result AS, SB, HG ARE ASSOCIATED WITH AU. AG AND BASE METAL CONTENTS ARE LOW. BARITE COMMON IN ORE ZONES. NBMG SAMPLE 2363 OF DRAB RED IRON-STAINED SANDSTONE OF BASAL ANTLER SEQUENCE ABOUT 1 M ABOVE UNCONFORMITY IN OPEN PIT WALL OF HISTORIC MARIGOLD MINE. IT CONTAINS 3% FE, 2% MG, 5% CA, 0.2% TI, 1500 PPM MN, 3 PPM AG, 1000 PPM AS, 200 PPM B, 300 PPM BA, 150 PPM CR, 20 PPM CU, 5 PPM MO, 20 PPM NI, 15 PPM PB, 150 PPM SB, 7 PPM SC, 100 PPM SR, 100 PPM V, 30 PPM Y, 300 PPM ZN, AND 200 PPM ZR

Mineral occurrence model information

Model code 75
USGS model code 19c
Deposit model name Distal disseminated Ag-Au
Mark3 model number 18

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Valmy Formation
    Stratigraphic age (youngest) Ordovician
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Argillite
    Rock unit name Valmy Formation
    Stratigraphic age (youngest) Ordovician
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate
    Rock type qualifier calcareous
    Rock unit name Antler Sequence
    Stratigraphic age (youngest) Early Permian
    Stratigraphic age (oldest) Middle Pennsylvanian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Antler Sequence
    Stratigraphic age (youngest) Early Permian
    Stratigraphic age (oldest) Middle Pennsylvanian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
    Rock unit name Antler Sequence
    Stratigraphic age (youngest) Early Permian
    Stratigraphic age (oldest) Middle Pennsylvanian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Antler Sequence
    Stratigraphic age (youngest) Early Permian
    Stratigraphic age (oldest) Middle Pennsylvanian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock type qualifier calcareous
    Rock unit name Havallah Sequence
    Stratigraphic age (youngest) Early Permian
    Stratigraphic age (oldest) Middle Pennsylvanian
  • Host or associated Associated
    Rock type Plutonic Rock > Porphyry
    Rock type qualifier feldspar porphyry dikes
    Stratigraphic age (youngest) Tertiary

Nearby scientific data

Ore Body (1) -117.169, 40.7359
ListMap
Ore Body (2) -117.171, 40.7237
ListMap
Ore Body (3) -116.19869, 40.6102
ListMap
Ore Body (4) -117.1759, 40.7286
ListMap
Ore Body (5) -117.15, 40.74
ListMap
Ore Body (6) -117.163, 40.745
ListMap
Ore Body (7) -117.162, 40.7667
ListMap
Ore Body (8) -117.1519, 40.7724
ListMap
Plant (9) -117.1484, 40.7493
ListMap
Ore Body (10) -117.1716, 40.6879
ListMap
Ore Body (11) -117.1785, 40.681
ListMap
Ore Body (12) -117.1716, 40.7045
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Golconda Thrust Fault
Type of structure Local
Structure description North- and northwest-striking Basin and Range normal faulting are evident inthe mine area.

Ore body information

  • General form irregular

Controls for ore emplacement

  • North- and northwest-striking Basin and Range normal faults, with minor or no offset, are the most important structural controls. The Golconda Thrust is not thought to be important as an ore control. Beds of calcareous conglomerate in the upper portions of the antler sequence host a majority of the ore, but parts of the Valmy Formation and lower Antler Sequence also host ore.

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Producer
Commodity type Both
Deposit size Medium
Significant Yes
Mining method Open Pit
Year of first production 1930
Plant type Leach
Milling method Heap Leach-Agglomerate-Carbon Column-Electrowin
Production years 1930s; 1982; 1984, 1989- present (2006). Mill came on line in 1988.

Mining district

District name Battle Mountain District
District name Marigold district

Land status

Ownership category BLM Administrative Area
Area name Winnemucca BLM District
Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Glamis Gold Ltd. and Barrick Gold
    Year 2006
  • Type Owner-Operator
    Owner Marigold Mining Co. (Cordex/San Fe Pacific Mining JV)
    Home office P. O. Box 9, Valmy, NV 89438
    Year 1996
  • Type Owner
    Owner Rayrock Yellowknife Resources Inc.
    Interest 66.7
    Home office Canada
    Year 1996
  • Type Owner
    Owner Homestake Mining Co.
    Interest 33.3
    Home office California
    Year 1996
  • Type Unknown
    Owner Euro-Nevada 1.75% Net Smelter Return (NSR)
    Year 1995

Production statistics

  • Year 1982
    Material ORE-AU
    Accuracy Estimate
    Description Ap_Grade: ^Approx. 0.11 Opt Au
  • Year 1989
    Description Mill 582,935 158000 Metric Ton Ore/Yr
  • Year 1990
    Description Heap Leach 333,475 683000 Metric Ton Ore/Yr
  • Year 1990
    Description Mill 1,772,478 514000 Metric Ton Ore/Yr
  • Year 1991
    Accuracy Accurate
    Description Gold 65469 Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Secondary metal recovered Silver Silver 0.06mt
    Primary metal recovered Gold Gold 2.04mt
  • Year 1995
    Material ore
    Ore mined 3093000mt
    Accuracy Accurate
    Description Ore Processed @ 0.028 Oz/St 3409000 St Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary metal recovered Gold Gold 2mt 1g/mt
  • Year 1996
    Material ore
    Ore mined 2648072.25mt
    Accuracy Accurate
    Description Ore Processed @ 0.029 Oz/St 2919000 St Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary metal recovered Gold Gold 2.28mt 1g/mt

Reserves and resources

  • Type In-situ
    Estimate year 2002
    Measured 117700000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold 0.43 g/mt Gold Primary 2002
  • Type In-situ
    Estimate year 2002
    Proved 71800000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold 0.81 g/mt Gold Primary 2002
  • Type In-situ
    Estimate year 1991
    Measured 7986000mt ore
    Demonstrated 7986000mt ore
    Total resources 7986000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.86 g/mt Gold Major 1991
  • Type In-situ
    Estimate year 1992
    Demonstrated 18500000mt ore
    Total resources 18500000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.36 g/mt Gold Major 1992
  • Type In-situ
    Estimate year 1994
    Measured 14287000mt ore
    Demonstrated 14287000mt ore
    Total resources 14287000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.17 g/mt Gold Major 1994
  • Type In-situ
    Estimate year 1996
    Measured 12764000mt ore
    Demonstrated 12764000mt ore
    Total resources 12764000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.13 g/mt Gold Major 1996
  • Type In-situ
    Estimate year 1996
    Demonstrated 13232000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.25 g/mt Gold Major 1996
  • Type In-situ
    Estimate year 1997
    Demonstrated 16391000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.17 g/mt Gold Major 1997

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Capacity 3568
    Capacity Units MT ORE/DAY
    Unit Production Cost 8.92
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 2
    Year of Information 1991

Comments on the workings information

  • Historic development was mainly underground, including 1140 feet of workings on two levels. Later exploration identified seven potentially bulk mineable gold mineralized zones as of 1990. These are the historic Marigold Mine and the Red Rock, East Hill, Top, 8 South, 8 North, and 5 North Zones. Workings developed in the last decade have been several open pits.
    From the Franco-Nevada website:
    The 8 South orebody produced from 1989 to 1994. In 2007, production declined relative to 2006 due to lower mined grades and higher strip ratios. However, pit sequencing shifted production from the lower grade Antler pit to the higher grade Basalt pit in the second half of the year. Exploration is now focused on the expansion of the Basalt pit, the evaluation of the Trout Creek fault trend and on the evaluation of structural targets in the gravel-covered pediment at the north end of the property.
  • ADDITIONAL ANIMAL CONTROLS INCLUDE WILDLIFE NETTING OVER HEAP LEACH PONDS. PROPERTIES HAVE VERY LITTLE SILVER; THEREFORE CN CONSUMPTION IS LOW. 1997 PLAN IS TO MINE, MILL, AND LEACH FROM 3 SEPARATE PITS. MATERIAL TYPES ARE QUITE DIFFERENT.

Comments on other economic factors

  • From 1938 to 1939, the historic Marigold Mine produced 433 tons of ore valued at $6,568. From 1989 through 2002, the modern Marigold mine produced 9,960,954 ounces of gold and from 1989-93 and 2001-02 it produced 11,466 ounces of silver.
    In 2002 the Marigold Mine had proven and probable reserves of 79.1 million tons of ore grading 0.026 ounces of gold per ton and a mineral resource of 129.7 million tons grading 0.014 ounces of gold per ton.

Comments on development

  • Details of the original discovery are unknown. Historic production was confined to underground workings in the immediate vicinity of the old Marigold Mine. Several thousand tons were shipped in the 1930s by Frank Horton. In 1982, Marigold Development Co. mined, crushed, and heap leached approximately 3200 tons of ore from an open pit on the site of the abandoned underground workings. This effort produced 271 ounces of gold at an estimated recovery rate of 75%. Exploration work within the mine area, prior to the involvement of Cordex in 1985, included extensive rock sampling, grid soil geochemistry, VLF-EM surveys, drilling, and geologic mapping by numerous companies. Most of the work was concentrated near the underground workings. Approximately 200 holes were drilled prior to 1985. In 1985, VEK/Andrus Associates drilled three holes on claims 1 mile NE of the underground workings in an area of alluvial cover. These holes intersected shallow bedrock, deep oxidation, anomalous trace element concentrations, and a gold-bearing interval of 0.017 opt gold from 720-765 ft. Depth (VEK hole #2). Cordex leased the VEK claims in September 1985 on the basis of these drill results. A drilling program was initiated in November 1985. The third and fourth holes of the program intersected ore grade intervals near the center of the 8 South ore zone. In 1986, consolidation of the land position was achieved by forming a joint venture between Cordex and Santa Fe Pacific Mining Corp. and leasing the claim block, which included the historic Marigold Mine. A 1250 ton/day carbon-in-leach mill was built to process ore grading over 0.04 opt gold. Recovery grade material was to be heap leached at a rate of approximately 1500 tons/day. The life of the mine was expected to exceed nine years. In 2003 Glamis Gold and Barrick Gold received permits for their Millennium Expansion project at the Marigold Mine, which will develop four new open pits at the site and two new heap leach facilities. The four new pits will be called Target I, Target II, Basalt and Antler. Once Millennium is in full swing, Glamis expects to produce 180,000 ounces of gold per year. In conjunction with the expansion program, Glamis has continued its in-fill and step-out drilling programs.

    By early 2006, Glamis Gold and joint venture Barrick Gold began their Millennium Expansion at the Marigold Mine in Humboldt County that will approximately triple the mine?s production.

Reference information

Bibliographic references

  • Deposit

    Graney, J.R., McGibbon, D.H., 1991, Geological setting and controls on gold mineralization in the Marigold Mine area, Nevada, in Geology and Ore Deposits of the Great Basin, Raines, G.L., et al., eds. The Geological Society of Nevada, Reno, p. 865-874.

  • Deposit

    NBMG, 1990, The Nevada Mineral Industry 1990, NBMG Special Publication MI-1990, p. 22.

  • Deposit

    Willden, R., 1964, Geology and Mineral Deposits of Humboldt County, Nevada, NBMG Bull 59.

  • Deposit

    Roberts, R.J., and Arnold, D.C., 1965, Ore Deposits of the Antler Peak Quadrangle, Humboldt and Lander Counties, Nevada, USGS Professional Paper 459-B.

  • Deposit

    Southern Pacific Company, 1964, Minerals for Industry.

  • Deposit

    Garside, L.J., 1984, Field Examination, 10 October 1984.

  • Deposit

    Minesearch Annual, 1984-1985, vol. vii, p. 279-283.

  • Deposit

    Nevada North Resources, Inc., News Release, November 13, 1984.

  • Deposit

    NBMG, 1994, MI-1993

  • Deposit

    Nevada Division of Mines, 1994

  • 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.

  • Deposit

    Adella Harding, Elko Daily Free Press, 8/20/02

  • Deposit

    Glamis Gold Ltd., press release, 9/29/02.

  • Deposit

    McGibbon, Doug , 2001, A blue-collar perspective on some relations of geological structure and gold deposition, Marigold Mine, Nevada, Geological Society of Nevada 2001 spring field trip conference, NV, United States, May 3-6, 2001; Geological Society of Nevada, Special Publication vol.33, pp.295-299.

  • Deposit

    Johnston, Ivan, and others, 1999, Geology and gold mineralization of the Buffalo Valley area, northwestern Battle Mountain Trend; Trenton Canyon Mine; North Peak Mine; Buffalo Valley Mine; Redline gold skarn deposit; Copper Canyon gold skarn, a review; Marigold Mine; Geological Society of Nevada, Special Publication, vol.31, 261 pp., 1999.

  • Deposit

    Smee, Barry W., 1998, A new theory to explain the formation of soil geochemical responses over deeply covered gold mineralization in arid environments; Journal of Geochemical Exploration, Volume 61, Issues 1-3, May 1998, Pages 149-172. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VCP-3T3RWC7-8&_user=696292&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000038819&_version=1&_urlVersion=0&_userid=696292&md5=3fa0ea0d35d424dc98c229974e7c1459

  • Deposit

    MINERALS FOR INDUSTRY, SOUTHERN PACIFIC CO., 1964, P.88.

  • Deposit

    RANEY, R., INTERVIEW WITH D. HEINEN, MINE SUPERINTENDENT AT MARIGOLD MINE, OCTOBER, 1991.

  • Deposit

    RAYROCK YELLOWKNIFE RESOURCES INC. ANNUAL REPORT, 1990.

  • Deposit

    U.S.B.L.M. ENVIRONMENTAL ASSESSMENT REPORT, MARIGOLD MINING PROJECT, HUMBOLDT COUNTY, NEVADA. APRIL 1988, 75 PP.

  • Deposit

    AMERICAN MINES HANDBOOK, 1996, P200.

  • Deposit

    1995/96 NEVADA MINES DIRECTORY, PP. 11, 16, 17, 22.

  • Deposit

    RANDOL 1996/97 MINING DIRECTORY, U.S. MINES & MINING COMPANIES, P256.

  • Deposit

    MAJOR MINES OF NEVADA, 1995, PP.6, 7.

  • Deposit

    NAT. ASSESSMENT U.S. DEPOSIT DATA BASE, KEITH LONG, 1995, #078 "EAST HILL - URN - TOP", PP. 70-72, AND #077, "MARIGOLD", PP. 76-78.

  • Deposit

    THE MINING RECORD, V 107, #34, AUG., 31, 1996, P13. "RAYROCK EXPANDED PIT HAS POTENTIAL FOR DEEPER DRILLING AT MARIGOLD."

  • Deposit

    THE MINING RECORD, V 107, #?, SEPT. 4, 1996, P27.

  • Deposit

    THE MINING RECORD, V. 107, #43, OCT., 23, 1996, P3.

  • Deposit

    HOMESTAKE 1995 FORM 10-K, PP11, 12.

General comments

Subject category Comment text
Deposit Most of the gold occurs as very fine (<5 micron) blebs in iron oxide pseudomorphs after pyrite, or as similar sized grains in carbonate veins or jarosite-stained quartz matrix material. In the 8 south orebody, gold mineralization correlates well with the intensity of iron oxide staining in the matrix, dark red iron oxide and jarosite usually indicate high gold content, whereas yellow iron oxide is associated with lower grade mineralization.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-80 Flynn, Patricia Dodd Nevada Bureau of Mines and Geology
Reporter 14-NOV-83 Western Field Operations Center (WFOC) U.S. Bureau of Mines
Updater 01-FEB-92 Phinisey, J. D. (Marcus, S.) U.S. Geological Survey
Updater 01-SEP-94 Li, Zhiping (Moyer, Lorre A.) U.S. Geological Survey
Reporter 23-MAR-95 Miller U.S. Bureau of Mines
Reporter 03-FEB-97 Buckingham, David A. U.S. Bureau of Mines
Reporter 01-FEB-05 LaPointe, D.D. Nevada Bureau of Mines and Geology
Editor 01-SEP-07 Schruben, Paul G. U.S. Geological Survey Converted from S&A FileMaker format to Oracle. Edit checks on rocks, units, and ages with Geolex search, and other fields.

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Operator history (post-MRDS)

MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:

  • Homestake Mining Co. — acquired by Subsidiary of Barrick Gold (2001)
    Operator of the historic Homestake Mine in South Dakota; acquired by Barrick Gold in 2001.

Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.

Maps centered on this site

Authoritative Nevada resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.