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Oro Grande Mining Co.

Past Producer in Siskiyou county in California, United States with commodity Gold
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Geologic information

Identification information

Deposit ID 10035513
MRDS ID M023325
Record type Site
Current site name Oro Grande Mining Co.
Alternate or previous names McKeen, Cummings, Shasta
Related records 10141635

Geographic coordinates

Geographic coordinates: -122.82445, 41.27095 (WGS84)
Elevation 1234
Relative position 0.9 MI. E. SUMMIT OF SUGAR HILL
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Geographic areas

Country State County
United States California Siskiyou

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 040N 009W 36 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Quartz Gangue

Analytical data

Result MILL HEADS SAID TO AVG. $9.65/TON. ORE WAS SAMPLED FOR 400 FT. ON ADIT LEVEL 193 FT. HIGHER THAN LOWEST LEVEL. AVG. VALUES ASSAYED AT $7-$8/TON IN GOLD. DATA WENT INTO 1925 EST. OF RESERVES. (SEE TABLE)

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -122.82445, 41.27095
ListMap

Ore body information

  • Strike N35E
    Dip 85SE
    Thickness 1.52M

Economic information

Economic information about the deposit and operations

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

Mining district

District name Callahan

Land status

Ownership category National Forest

Comments on the production information

  • PRODUCTION YEARS EST. FROM REFERENCE. STATED THAT AN EQUAL AMOUNT OF ORE PROBABLY PRODUCED, BUT NOT RECORDED. NO OTHER INFORMATION FOUND.

Comments on the reserve resource information

  • YEAR EST. FROM REFERENCE. OBRIEN STATES 25 TONS OF ORE, VALUED AT $12/TON, IS BLOCKED OUT. LOGAN STATES THAT PRODUCTION PREVIOUS TO ORO GRANDE MINING CO.'S OPERATIONS WAS ABOUT $500,000, FOR ABOUT ONE HALF OF WHICH THERE IS A DEFINITE RECORD, BUT NONE FOR PRODUCTS OF ARRASTRAS AND MILLING. 1931 EST. APPARENTLY A REFINEMENT OF 1925 VALUES.

Comments on the workings information

  • 5 MAIN ADIT LEVELS. ON LOWEST OR NO. 1 ADIT LEVEL, 2825 FT. OF DRIFTS, ON NO. 2 LEVEL, 220 FT. ABOVE, 2300 FT. OF DRIFTS. RAISE CONNECTS 2 LEVELS AT POINT 1500 FT. FROM NO. 1 TUNNEL PORTAL. LEVELS ABOVE NO. 2 STOPED OUT AND CAVED BETWEEN NO. 1 AND NO. 2. NUMEROUS CUTS AND SMALL ADITS OR VEINS ON SLOPE OF HILL TO NW OF MINE. LOGAN (1925) EST. WORKINGS AT 3000 FT. ON VEIN, TOTAL FOOTAGE OF 8000 FT. OF TUNNELS AND 300 FT. OF RAISE, VERTICAL DEPTH REACHED OF 400 FT. BELOW OUTCROP.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M023325

Bibliographic references

  • Deposit

    OBRIEN, J.C., 1947, MINES AND MINERAL RESOURCES OF SISKIYOU COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V.43, NO. 4, P. 447 PL. 42

  • Deposit

    LOGAN, C.A., 1925, SACRAMENTO FIELD DIVISION: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, VOL. 21, NO. 4, P. 453-454

  • Deposit

    AVERILL, C.V., 1931, REDDING FIELD DIVISION: CALIF. JOUR. MINES & GEOLOGY V. 27, P. 48-49

  • Production

    AVERILL (1931)

  • Reserve-Resource

    AVERILL (1931) OBRIEN (1947) LOGAN (1925)

General comments

Subject category Comment text
Deposit 4 VEINS, ONLY 1 DEVELOPED; FISSURE VEIN W/10% FILLING OF PYRITE. VEIN AVG. 2 FT. THICK. 3 PAY SHOOTS EACH 250 FT. LONG. NO. 1 ADIT IN SHOOT FOR LAST 75 FT. VEIN HAS GOUGE PARTING ON BOTH WALLS. BREAKS CLEAN OF COUNTRY ROCK WITHOUT DIFFICULTY IN SHRINKAGE STOPES. VEINS ON HILL TO NW OF MAIN WORKINGS OCCUR CLOSE TO SERPENTINE CONTACT, AS PIECES OF FLOAT FROM GRANODIORITE TO WHITE APLITIC-APPEARING MATERIAL W/SCATTERED CRYSTALS OF BIOTITE IS ENCOUNTERED.
Deposit 480 ACRES. PATENTED. 200 ACRES HELD BY LOCATION ; INFO.SRC : 1 PUB LIT

Reporter information

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