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Forlorn Hope Mine

Occurrence in Lincoln county in Nevada, United States with commodities Lead, Copper, Zinc, 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. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10046461
MRDS ID M241627
Record type Site
Current site name Forlorn Hope Mine
Alternate or previous names NBMG Sample Site 1444

Geographic coordinates

Geographic coordinates: -114.59945, 37.9169 (WGS84)
Elevation 2146

Site location context

Political divisions (FIPS codes)

Lincoln(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Highland Peak(quadrangle 1:24,000 scale)

Caliente(quadrangle 1:100,000 scale)

Caliente(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Dry Lake Valley(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Lincoln

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 001N 066E 29 Nevada

Comments on the location information

  • SOMETIMES DESCRIBED IN COMET DISTRICT

Commodities

Commodity Importance
Lead Primary
Copper Primary
Zinc Critical Primary
Silver Primary

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore
Calcite Gangue
Pyrite Gangue
Quartz Gangue
Siderite Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result SAMPLE 1444 CONTAINS 15% FE, GREATER THAN 5000 PPM MN, 10 PPM AG, 500 PPM AS, 200 PPM BA, 100 PPM CD 500 PPM CU, 7000 PPM PB, 10000 PPM ZN.

Mineral occurrence model information

Model code 72
USGS model code 19a
Deposit model name Polymetallic replacement
Mark3 model number 47

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone

Nearby scientific data

(1) -114.59945, 37.9169
ListMap

Economic information

Ore body information

  • General form TABULAR
    Strike N60-70E
    Dip STEEP
    Thickness 30.48M
    Length 1158.24M

Controls for ore emplacement

  • Forlorn Hope Dike And Vein Zone

Comments on the geologic information

  • CARBONATES SHOW EVIDENCE OF RECRYSTALLIZATION, CONTAINING REMOBILIZED PODS OF WHITE CALCITE. SOME OF THE SHALES CONTAIN FINELY CRYSTALLINE PYRITE (PARTIALLY OXIDIZED) DISSEMINATED THROUGHOUT AND IN VEINLETS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Highland (Just N Of Boundary For Comet District)

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Nerco?, Kerr-Mcgee

Workings at the site

  • Type of workings Underground
    Overall depth 182.88M

Comments on the workings information

  • VERTICAL SHAFT, ONE N20-25E-TRENDING ADIT 521 FT LONG, VERTICAL RAISE TO SURFACE, VERTICAL WINZE TO COMBINED METALS MEMBER

Comments on development

  • IN 1983, NERCO WAS DOING INITIAL EXPLORATION AND ASSESSMENT WORK ON THEIR CLAIMS IN THIS AREA. SOME EVIDENCE OF RECENT SAMPLING OF THE DUMPS

Reference information

Bibliographic references

  • Deposit

    TSCHANTE, C.M., & PAMPEYAM., F.H., 1970, GEOLOGY AND MINERAL DEPOSITS OF LINCOLN CO., NEV., NEV. BUREAU OF MINES BULL 73, P. 151.

  • Deposit

    FITCH, D.C., 1964, GEOLOGY AND ORE DEPOSITS OF THE COMET DISTRICT, LINCOLN CO., NEV: UNIV. OF NEW MEXICO, M.S. THESIS, P. 77, 85-87

  • Deposit

    BENTZ, J. AND SMITH, P., 1983, FIELD EXAMINATION REPORT, AUG. 27, 1983.

General comments

Subject category Comment text
Deposit SAMPLE 1444 WAS COLLECTED FROM THE DUMP AND CONSISTS OF QUARTZ-MANGANESE-SIDERITE-SULFIDE ORE WHICH IS QUITE DENSE. IT CONTAINS UNOXIDIZED CRYSTALS AND LENSES OF PYRITE, CHALCOPYRITE, POSSIBLY SOME BLACK SPHALERITE (?) AND MINOR GALENA. ROCK DIFFERS FROM OTHER MINERALIZED ROCK FOUND ALONG THE WESTERN HIGHLAND RANGE IN THAT IT CONTAINS MORE PYRITE AND CHALCOPYRITE AND FEWER LEAD AND ZINC MINERALS. THE FORLORN HOPE DIKE AND VEIN ZONE IS ONE OF THE MOST CONTINUOUS MINERALIZED STRUCTURES IN THE AREA, HAVING A DISCONTINUOUSLY EXPOSED STRIKE LENGTH OF 3800 FT, CUTTING ROCKS FROM THE PIOCHE SHALE TO THE BURNT CANYON MEMBER OF THE HIGHLAND PEAK FM. THE VEIN ITSELF IS ABOUT 1 FT THICK, BUT A LARGE BEDDED, ALTERED AND MINERALIZED ZONE OCCURS NEAR THE VEIN IN MEMBER A OF THE LYNDON LIMESTONE. THE ALTERED AND BRECCIATED ZONE HAS A STRIKE LENGTH OF OVER 800 FT AND IS UP TO 100 FT THICK. THE MINERALIZED ROCK NEAR THE VEIN INTERSECTION CONTAINS MODERATE AMOUNTS OF GALENA AND FE-MN OXIDES.
Deposit MINERALIZATION DROPS OFF SHARPLY ON THE SOUTH SIDE OF THE PROJECTED VEIN AND TAPES OFF WITHIN 20 FT ON THE NORTH SIDE. THE REMAINDER OF THE ALTERED ZONE IS SPOTTED LOCALLY WITH LIMONITE MINERALS AND CONSISTS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1982 Lyles, B.F. (Tingley, J.V.) Nevada Bureau of Mines and Geology

Beyond USGS

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

External references

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.