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Hapgood Mine

Past Producer in Humboldt county in Nevada, United States with commodity Mercury
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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. Workings at the site
  21. Links to other databases
  22. Bibliographic references
  23. General comments
  24. Reporter information

Geologic information

Identification information

Deposit ID 10040532
MRDS ID M055348
Record type Site
Current site name Hapgood Mine
Alternate or previous names Grayson Group, New Alma Group, York Mine
Related records 10271335

Geographic coordinates

Geographic coordinates: -117.45153, 41.32739 (WGS84)
Elevation 1600
Relative position 30 MILES NNE OF WINNEMUCCA

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hot Springs Peak(quadrangle 1:24,000 scale)

Osgood Mountains(quadrangle 1:100,000 scale)

McDermitt(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Little 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 040N 040E 15 NE Nevada

Comments on the location information

  • UNSURVEYED TOWNSHIP

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore
Calcite Gangue
Clay Gangue
Gypsum Gangue
Quartz Gangue

Alteration

  • (Local) Clay

Analytical data

Result SAMPLE 2451 OF QUARTZ VEINLETS IN A MIXTURE OF QUARTZITE AND HORNFELS WITH SOME FE OXIDES AND CINNABAR, CONTAINS 0-.5 % FE, 2 % MG, 3 % CA, 0.1 % TI, 200 PPM MN, 0.5 PPM AG, 70 -PPM B, 70 PPM BA, 50 PPM CR, 20 PPM CU, 30 PPM LA, 10 PPM NI, -15 PPM V, 15 PPM Y, 200 PPM ZR, AND +5 LB/T HG(BY AA ANALYSIS)-

Mineral occurrence model information

Model code 177
USGS model code 27a
Deposit model name Hot-spring Hg

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Havallah Formation;Pumpernickel Formation
    Rock description Havallah Formation;Pumpernickel Formation
    Stratigraphic age (youngest) Late Permian

Nearby scientific data

(1) -117.45153, 41.32739
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Reg.Struct: Thrust Fault
Type of structure Local
Structure description Bedding Plane Shears

Ore body information

  • General form TABULAR
    Strike N45E
    Dip 45NW

Controls for ore emplacement

  • Bedding Plane Shears

Comments on the geologic information

  • GEOL.COM: CINNABAR OCCURS ALONG SEVERAL CLOSELY-SPACED PARALLEL BEDDING PLANE SHEARS AS VEINLETS AND LOCALLY FORMS ISOLATED BUNCHES IN THE LIMESTONE AWAY FROM THE SHEARS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1936
Discoverer T. C. Hapgood
Year of first production 1937
Production years TO 1961

Mining district

District name Poverty Peak District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Operator
    Owner Crofoot Lumber And Mining Co.
    First year 1970
  • Type Owner
    Owner Leland York
    First year 1977

Production statistics

  • Year 1941
    Period 1939-1941
    Material HG
    Accuracy Estimate
    Description Cp_Grade: ^15 Lb/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Mercury Mercury 6776g/mt

Comments on the production information

  • 2 - PIPE INCLINED RETORT (1939)

Comments on the reserve resource information

  • NO KNOWN RESERVES

Workings at the site

  • Type of workings Underground
    Length 152.4M

Comments on the workings information

  • PRINCIPAL WORKING IS A HAULAGE LEVEL TOTALLING ABOUT 500 FT IN LENGTH WITH ITS 2 BRANCHES. A MINERALIZED FAULT CUT- ABOUT 120 FT FROM THE PORTAL HAS BEEN FOLLOWED BELOW THE HAUL-AGE LEVEL TO A DEPTH OF 34 FT AND ABOVE THIS LEVEL TO THE SURF-ACE, A DISTANCE OF 75 FT. AN ADIT 30 FT BELOW THE HAULAGE LEVE-L INTERSECTS THE ORE ZONE. A SHELF ON THE SOUTH END OF THE PRO-PERTY IS CAVED AND SEVERAL TRENCHES ARE PRESENT ON THE NORTH E-ND OF THE PROPERTY; OPEN CUT, TIN CABIN, RETORTS.

Comments on development

  • IN 1939-1940, DISCOVERER T. C. HAPGOOD RECOVERED 66 FLASKS FROM A 2-PIPE INCLINED RETORT. IN 1941 E. T. FISCHER AN-D T. L. CHAPMAN LEASED THE PROPERTY AND PRODUCED 38 FLASKS. EA-RLY IN 1942, THE LESSEES TURNED THE PROPERTY BACK. IN THE PERI-OD 1960-62, 21 FLASKS WERE PRODUCED BY W. BRUNKE AND F. DARRAH-. THE PROPERTY WAS SUBSEQUENTLY LEASED BY LELAND YORK IN 1965,- WHO PRODUCED 2 FLASKS HG IN 1965. IN 1970, THE CROFOOT LUMBER- CO. LEASED THE PROPERTY AND MINED 400 TONS ORE.

Reference information

Bibliographic references

  • Deposit

    WILLDEN, R., 1964, GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT CO., NEV.; NEV. BUR MINES BULL. 59.

  • Deposit

    BAILEY, E.H. AND PHOENIX, D.A., 1944, QUICKSILVER DEPOSITS IN NEVADA: NEV. U. BULL. 38 NO.5; GEOL MIN. SER. NO 41

  • Deposit

    JONES, R. B., 29 APR 85, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS

  • Deposit

    BAILEY, E. H., RYTUBA, J. J., AND JONES, R. B., 1984, UNPUBLISHED DATA ON MERCURY DEPOSITS OF NEVADA.

  • Deposit

    GALLAGHER, M. J., 1969, NEVADA MINES, MILLS, AND SMELTERS IN OPERATION AS OF JULY 1, 1969.

  • Deposit

    MURPHY, MATT, 1943, NEVADA MINES, MILLS, AND SMELTERS.

  • Production

    BAILEY, RYTUBA, AND JONES (1984)

General comments

Subject category Comment text
Deposit BEDDING-PLANE SHEARS
Deposit DISCOVERED ABOUT 1936 OR 1937 BY T.C. HAPGOOD. THE GROUP OF 6 UNPATENTED CLAIMS. IN 1937, T.C. HAPGOOD FORMED A PARTNERSHIP WITH F.T. JOHNSON AND O.L. CASH, AND ERECTED A 2-PIPE RETORT FROM WHICH 66 FLASKS HG WERE RECOVERED IN 1939-40. LESSEES PRODUCED 38 FLASKS IN 1941. DEVELOPMENT CONSISTS OF ABOUT 500 FT OF UNDERGROUND WORKINGS. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1974 Bergquist, Joel R. Nevada Bureau of Mines and Geology
Updater 01-MAR-1986 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology
Updater 01-SEP-1994 Li, Zhiping (Peters, S.) U.S. Geological Survey

Beyond USGS

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

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.