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Labrador Deposit

Prospect in Lander county in Nevada, United States with commodities Gold, Silver
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Geologic information

Identification information

Deposit ID 10055103
MRDS ID RE00049
Record type Site
Current site name Labrador Deposit

Geographic coordinates

Geographic coordinates: -117.03038, 40.62268 (WGS84)
Elevation 1798
Relative position LOCATED APPROX. 2000 FT. WEST OF SURPRISE DEPOSIT.
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Geographic areas

Country State County
United States Nevada Lander

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 32N 44E 28 Nevada

Comments on the location information

  • PREVIOUS QUAD DESIGNATION = WINNEMUCCA (1971) 1:250000

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Calcite Gangue
Chlorite Gangue
Diopside Gangue
Epidote Gangue
Garnet Gangue
Quartz Gangue

Alteration

  • (Local) Skarn. See Geology Comments.

Mineral occurrence model information

Model code 59
USGS model code 18b
Deposit model name Skarn Cu
Mark3 model number 8

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Skarn (Tactite)
    Rock unit name Harmony Formation;Battle Formation
    Rock description Harmony Formation;Battle Formation

Nearby scientific data

(1) -117.03038, 40.62268
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Geologic structures

Type of structure Local
Structure description Nne- And Wnw-Trending High Angle Normal Faults; Surprise Fault.

Controls for ore emplacement

  • Ore Is Associated With Disseminated And Fracture Controlled Oxidized Pyrite In Garnet Skarn Of The Harmony Formation And In Lens-Shaped Calc-Silicate Horizons Of The Battle Formation Adjacent To Mineralized Structures.

Comments on the geologic information

  • ALTERATION COMMENTS: PROGRADE GARNET+DIOPSIDE SKARN IS PARTIALLY REPLACED BY A RETROGRADE ASSEMBLAGE OF CHLORITE, QUARTZ, CALCITE, AND MINOR EPIDOTE. GEOLOGY COMMENTS: A QUARTZ-FELDSPAR PORPHYRY DIKE IN THE PIT IS CUT BY GARNET+PYROXENE VEINLETS. THIS DIKE HAS CHARACTERISTICS OF OTHER TERTIARY DIKES IN THE AREA, THEREFORE ALTERATION AND AU DEPOSITION LIKELY ARE TERTIARY.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Battle Mountain District

Ownership information

  • Type Owner-Operator
    Owner Battle Mountain Gold Co.

Reserves and resources

  • Type In-situ
    Estimate year 1988
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.298 g/mt Gold Major 1988
    Silver Ag 3.67 g/mt Silver Major 1988

Comments on the reserve resource information

  • 1988 RESERVES CALCULATED USING A STRIP RATIO OF 2.5:1.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS RE00049

Bibliographic references

  • Deposit

    SCHMIDT, K. W., WOTRUBA, P. R., AND JOHNSON, S. D., 1988, GOLD-COPPER SKARN AND RELATED MINERALIZATION AT COPPER BASIN, NEVADA, IN GOLD DEPOSITS OF NORTH CENTRAL NEVADA, SPECIAL PUBLICATION #8, THE GEOLOGICAL SOCIETY OF NEVADA, RENO

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1992 Phinisey, J. D. (Marcus, S.) U.S. Geological Survey