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Kramer Hill Mine

Past Producer in Humboldt county in Nevada, United States with commodities Gold, Silver
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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. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Reserves and resources
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10043952
MRDS ID M231261
Record type Site
Current site name Kramer Hill Mine
Alternate or previous names Golconda Gold Ledge Mining Co.
Related records 10174105

Geographic coordinates

Geographic coordinates: -117.50263, 40.92628 (WGS84)
Elevation 1561
Relative position ABOUT 2 MILES SW OF GOLCONDA

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pole Creek(quadrangle 1:24,000 scale)

Winnemucca(quadrangle 1:100,000 scale)

Winnemucca(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Humboldt(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Humboldt

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 35N 40E 5,8 Nevada

Comments on the location information

  • W. SLOPE KRAMER HILL

Commodities

Commodity Importance
Gold Primary
Silver Primary

Comments on the commodity information

  • A SCANNING ELECTRON MICROPROBE ANALYSIS OF VEIN MATERIAL REVEALS THE PRESENCE OF PYRITE, ARSENIC-BEARING PYRITE, ARSENOPYRITE, GALENA, SPHALERITE, CHALCOPYRITE, A LEAD ANTIMONY SULFIDE, AND CINNABAR. ALSO OBSERVED IN THE SEM ANALYSIS WAS A 25 MICRON GRAIN OF GOLD OCCURRING IN AN IRON OXIDE FILLED FRACTURE IN PYRITE.

Materials information

Materials Type of material
Pyrite Gangue

Alteration

  • (Local) Silicification And Argillization. Both The Fault And Hanging Wall Fracture Zone Are Silicified. The Shaley Rocks Of The Hanging Wall Fracture Zone Are Strongly Argillized. The Clays Produced By Argillization Are Kaolinite, Dickite, Illite(?), And An Unidentified Expanding Variety.

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 Twin Canyon Member Of Osgood Mt. Qtzt
    Rock description Twin Canyon Mbr. Of Osgood Mt. Qtzt
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian

Nearby scientific data

(1) -117.50263, 40.92628
ListMap

Economic information

Ore body information

  • General form TABULAR
    Strike N10E
    Dip 80W
    Length 289.56M
    Width 24.38M

Controls for ore emplacement

  • See Comments

Comments on the geologic information

  • KRETSCHMER NOTES THAT THE STYLE OF MINERALIZATION IS SOMETHING LIKE A HYBRID BETWEEN AN EPITHERMAL VEIN AND A CARLIN-TYPE DEPOSIT. THIS DEPOSIT DOES NOT FIT PARTICULARLY WELL INTO ANY OF THE USGS MODEL CATEGORIES, BUT SEEMS TO BE CLOSEST TO #26A.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1907
Discoverer L.K. Kramer
Year of first production 1908
Production years 1908- ??; 1990- PRESENT (1991)

Mining district

District name Golconda District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner-Operator
    Owner Pinson Mining Co.

Comments on the production information

  • AT THE OFFICIAL GOLD PROCE OF $20.63/OZ. IN THE EARLY 1900'S, HISTORIC PRODUCTION WOULD BE APPROXIMATELY 4500 0Z. AT A GRADE OF 0.15 OPT GOLD.

Reserves and resources

  • Type In-situ
    Estimate year 1990
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.298 g/mt Gold Major 1990

Workings at the site

  • Type of workings Surface/Underground
    Length 609.6M

Comments on the workings information

  • THE HISTORIC UNDERGROUND WORKINGS CONSISTED OF TWO MAIN ADIT LEVELS THAT CONNECT WITH A 220 FT. DEEP MAIN SHAFT. THERE ARE DEVELOPMENT WORKINGS ALONG THREE LEVELS WITH SUBSIDIARY EXPLORATORY HEADINGS, WINZES, AND ORE PASSES.

Comments on development

  • EIGHT CLAIMS WERE STAKED ON THE PROPERTY IN 1907 BY L.K. KRAMER. TWO CLAIMS WERE PATENTED IN 1909 BY THE GOLCONDA LEDGE MINING CO. ORE WAS PRODUCED FROM UNDERGROUND WORKINGS AND PROCESSED IN GOLCONDA, AND LATER, A 20 STAMP MILL WAS CONSTRUCTED ON THE SITE. APPROXIMATELY 25,000-30,000 TONS OF ORE WERE PROCESSED. WORK BY CORDEX IN THE EARLY 1970'S CONSISTED OF GEOLOGIC MAPPING, UNDERGROUND CHIP AND CHANNEL SAMPLING, BULLDOZER TRENCHING, AND THREE DRILL PROGRAMS TOTALLING 18 ROTARY PERCUSSION HOLES. CORDEX IDENTIFIED A MODEST TONNAGE OF 0.19 OPT GOLD ALONG THE MAIN VEIN. LOWER GRADE DISSEMINATED ORE WAS NOT ATTRACTIVE AT THIS TIME AND THE PROPERTY WAS DROPPED. THE PROPERTY WAS REACQUIRED BY PINSON MINING CO. IN 1986. A PROGRAM TO DEVELOP THE LOWER GRADE DISSEMINATED ORE WAS THEN INITIATED.

Reference information

Bibliographic references

  • Deposit

    PIERCE, C.A. (NO DATE), PRIVATE REPORT, NBMG FILES (128,ITEM 2)

  • Deposit

    VANDERBURG, W.O., 1938, RECONNAISSANCE OF MINING DISTRICTS IN HUMBOLDT CO., NEV: USBM I.C.6995

  • Deposit

    KRETSCHMER, E.L., 1991, GEOLOGY OF THE KRAMER HILL GOLD DEPOSIT, HUMBOLDT COUNTY, NEVADA, IN RAINES, G.L., ET AL, EDS., GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 857-863.

  • Production

    PIERCE, C.A. (NO DATE); VANDERBURG, W.O., 1938 KRETSCHMER, E.L., 1991, GEOLOGY OF THE KRAMER HILL GOLD DEPOSIT, HUMBOLDT COUNTY, NEVADA, IN RAINES, G.L., ET AL, EDS., GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 857-863.

General comments

Subject category Comment text
Deposit ; MODEL NAME COULD ALSO BE: SEDIMENT-HOSTED AU.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1980 Tingley, J.V. Nevada Bureau of Mines and Geology
Updater 01-DEC-1991 Phinisey, J. D. (Marcus, S.) U.S. Geological Survey
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.