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Reward Mine

Past Producer in Inyo county in California, United States with commodities Gold, Silver, Copper, Lead
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Geologic information

Identification information

Deposit ID 10103481
MRDS ID M024083
Record type Site
Current site name Reward Mine
Alternate or previous names Brown Monster, Brown Moster-Reward

Geographic coordinates

Geographic coordinates: -118.05398, 36.7469 (WGS84)
Elevation 1219
Relative position 4 MI N. OWENYO STATION ON REWARD GULCH
(click for info)

Geographic areas

Country State County
United States California Inyo

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 014S 036E 03 California

Comments on the location information

  • UTM ACC. LAND UNSURVEYED

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Secondary
Lead Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Anglesite Gangue
Calcite Gangue
Chrysocolla Gangue
Diopside Gangue
Jasper Gangue
Limonite Gangue
Linarite Gangue
Quartz Gangue
Tremolite Gangue

Alteration

  • (Local) Oxidation

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Pennsylvanian
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -118.05398, 36.7469
ListMap

Geologic structures

Type of structure Local
Structure description Reward Gulch Eroded Along Shear Zone, 40-50 Ft. Wide, Slickensides, Faults

Ore body information

  • General form PINCH-SWELL
    Strike N70W, N40W
    Dip 25NE, 40NE
    Thickness 3.66M

Controls for ore emplacement

  • Bedding Planes

Comments on the geologic information

  • DIORITE INTRUDES LIMESTONE FEW HUNDRED YARDS E. OF MINE. WELL FORMED CRYSTALS OF WULFENITE OCCUR IN VUGS IN QUARTZ AT N. INCLINE. SMITHSONITE IN FINE RADIAL GROUPS, SOME 0.5 IN. IN DIAMETER

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1870

Mining district

District name Russ

Production statistics

  • Year 1936
    Period 1935-1936
    Material AU ORE
    Accuracy Estimate
    Description Cp_Grade: ^$25/Ton Au, 1.5-2% Pb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Lead Lead 2wt-pct
  • Year 1952
    Period 1911-1952
    Material AU-AG ORE
    Description Cp_Grade: ^33,800 Lbs. Cu And 267,800 Lbs Pb As Byproducts

Comments on the production information

  • ORE PRODUCED IN 1936 RAN $11/TON AU AND AG. ORE SHIPPED AND TREATED AT TROPICO, KERN COUNTY, REPORTEDLY CARRIED $25-$40/TON AU. ACCORDING TO GOODWIN (1957), TOTAL PRODUCTION EXCEEDED $300,000.

Comments on the workings information

  • DEVELOPMENT-REWARD WORKINGS: NO. 1 TUNNEL IS DRIVEN 1200 FT. N. 55 DEG E., 650 FT. TO THE VEIN AND THEN DRIFT SOUTHEAST 800 FT. ABOUT 50 FT. ABOVE THIS TUNNEL LEVEL IS NO. 2 TUNNEL LEVEL WHICH IS DRIVEN SOUTHEAST 800 FT.; NO. 3 TUNNEL LEVEL IS 700 FT. IN LENGTH; NO. 4 TUNNEL LEVEL IS 600 FT. IN LENGTH; NO. 5 TUNNEL LEVEL IS 400 FT. IN LENGTH; NO. 6 TUNNEL LEVEL IS 300 FT. IN LENGTH. THE INTERVALS BETWEEN NO. 2 TUNNEL LEVELS AND THE OTHERS ABOVE ARE 25 FT. ORE-SHOOTS STOPED FROM NO. 2 TUNNEL LEVEL TO THE SURFACE. BROWN MONSTER WORKINGS: THE BROWN MONSTER INCLINE SHAFT IS SUNK ALONG A FAULT, WHICH STRIKES N. 40 DEG E., TO DEPTH 300 FT. WITH LEVELS AT 60, 96, 200 AND 250 FT. ON THE 96-FT. LEVEL GOLD VALUES WERE DISCOVERED IN LIMESTONE SOUTHEAST OF INCLINE SHAFT, AND IN THE FOOTWALL OF THE REWARD VEIN ON NO. 2 TUNNEL LEVEL. THE ORE WAS STOPED FROM THE 200-FT. LEVEL TO SURFACE EAST AND WEST OF INCLINE SHAFT FOR A LENGTH OF 200 FT. WITH AVERAGE WIDTH OF 6 FT. ON THE RIDGE NORTH
  • OF THE BROWN MONSTER INCLINE SHAFT, AND ABOUT 500 FT. IN ELEVATION ABOVE COLLAR OF THE SHAFT, THE VEIN IS EXPOSED ON THE SURFACE FOR DISTANCE OF 500 FT. ORE-SHOOT DEVELOPED ALONG THE SURFACE OUTCROP IS ABOUT 200 FT. IN LENGTH, WITH AVERAGE WIDTH OF 8 FT. THREE INCLINE SHAFTS WERE SUNK ON THE VEIN TO DEPTHS OF 30 FT. AND 90 FT.; THESE SHAFTS ARE ABOUT 75 FT. APART. FROM 1940-42, SEVERAL HUNDRED FT. OF DRIFTS, CROSSCUTS DRIVEN, DIAMOND DRILLING. MILLSITE AND NUMEROUS BUILDINGS.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M024083

Bibliographic references

  • Deposit

    NORMAN, L.A., JR. AND STEWART, RICHARD M., 1951, MINES AND MINERAL RESOURCES OF INYO COUNTY: CALIF. JOURNAL OF MINES AND GEOLOGY, V. 47, NO. 1, P. 48-49

  • Deposit

    TUCKER, W.B. AND SAMPSON, R.J., 1938, MINERAL RESOURCES OF INYO COUNTY: CALIF. JOUR. MINES AND GEOLOGY, V. 34, NO. 4, P. 386-388

  • Deposit

    KNOPF, ADOLPH, 1918, INYO RANGE AND THE EASTERN SLOPE OF THE SOUTHERN SIERRA NEVADA, CALIF: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER NO. 110, P. 121-122

  • Deposit

    GOODWIN, J.G., 1957, LEAD AND ZINC IN CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 53, NOS. 3 & 4, P. 505

  • Production

    TUCKER AND SAMPSON (1938), NORMAN AND STEWART (1951), KNOPF (1918), GOODWIN (1957)

General comments

Subject category Comment text
Deposit BROWN MONSTER VEIN 4-12 FT. THICK; REWARD VEIN 6 FT. THICK. ORE SHOOTS ON BROWN MONSTER VEIN FROM 100-200 FT. LONG, AVG. 4 FT. THICK. CAN BE TRACED ON SURFACE FOR 1000 FT NW OF REWARD GULCH. DIP OF VEIN STEEPENS WITH DEPTH. ORE IS A SOLID, WELL-DEFINED QUARTZ. GOLD DESCRIBED AS ASSOCIATED WITH OXIDES, CARBONATES AND SULFIDES OF LEAD, COPPER AND IRON, WITH CONSIDERABLE GRAPHITIC SLATE. ORE SHOOT ON REWARD VEIN 150-300 FT. LONG, AVG. 6 FT. THICK. VEIN CARRING PB, AG AND AU IN UPPER LEVELS OF REWARD WORKINGS. MOST OF ORE ON BROWN MONSTER VEIN BARREN OF SULFIDES WITH LOCAL BLEBS OF PYRITE, AND RARELY, CHALCOPYRITE, GALENA AND SPHALERITE. LARGER MASSES OF SULFIDES ON REWARD VEIN. FAULTS DISPLACE VEINS FROM 1-6 FT.; SEGMENTS OR BLOCKS DOWNTHROWN ON S. SIDE. ON N. SIDE OF GULCH, DIORITE SILL CUT BY 2 FAULTS, BOTH OF WHICH DISPLACE SILL 15 FT. VERTICALLY AND PRODUCE FAULT SEGMENT 20 FT. LONG.
Deposit INCLUDES ECLIPSE, HIDDEN TREASURE GROUP, HIRSH AND TELESCOPE GROUP. 2 PATENTED, 6 UNPATENTED CLAIMS AND 2 MILLSITES. OPERATED INTERMITTENTLY BY VARIOUS OWNERS, LESSEES ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1980 Nelson, Scott C. (Albers, John, P.) U.S. Geological Survey