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Del Norte Group

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

Identification information

Deposit ID 10086463
MRDS ID X023748
Record type Site
Current site name Del Norte Group
Related records 10139290

Geographic coordinates

Geographic coordinates: -117.1695, 36.43497 (WGS84)
Elevation 1524
Relative position 1 MI. W SKIDOO
(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 017S 044E 24,25 California

Comments on the location information

  • UTM EST. LAND UNSURVEYED. LOC PROJECTED

Commodities

Commodity Importance
Gold Primary
Lead Secondary
Copper Secondary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Analytical data

Result SAMPLES CUT AT 5-FT. INTERVALS FROM 2 50-FT. SHAFTS AND 2 TRENCHES ASSAYED $6/TON IN GOLD. ORE FROM INCLINE SUNK IN 1939 ASSAYED $35-$50/TON IN GOLD

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite

Nearby scientific data

(1) -117.1695, 36.43497
ListMap

Ore body information

  • Strike N-S
    Dip 30-70W
    Thickness 0.61M

Controls for ore emplacement

  • Fractures

Comments on the geologic information

  • MASSIVE QUARTZITE BED, 25-30 FT. THICK, STRIKES E-W, DIP 15 N, OVERLIES QUARTZ MONZONITE

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 Wildrose Springs

Land status

Ownership category National Park

Comments on the production information

  • SEVERAL SHIPMENTS OF SELECTED ORE REPORTEDLY AVG. $16-$25/TON. DURING EARLIER PRODUCTION YEARS. ABOVE VALUE FROM OPEN CUT. NO OTHER PRODUCTION RECORDS FOUND.

Comments on the workings information

  • 10 SHAFTS, 10-15 FT. DEEP, NUMBER OF TRENCHES ABOUT 100 FT. IN LENGTH, 2 FT. DEEP. 2 OF THE SHAFTS ARE 50 FT DEEP, ABOUT 600 FT. APART. TUNNEL DRIVEN SW 160 FT. IN MONZONITE TO PROSPECT VEINS IN IT. PORTAL WAS VERTICALLY BELOW EAST EDGE OF OVERLYING QUARTZITE BED. IN 1939, SHALLOW INCLINE SUNK ON INYO NO. 2 CLAIM AND STOPED A SMALL TONNAGE OF ORE.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS X023748

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. 43

  • Deposit

    TUCKER, W.B. AND SAMPSON, R.J., 1938, MINERAL RESOURCES OF INYO COUNTY: CALIF. JOUR. MINES AND GEOLOGY, V. 34, NO. 4, P. 394-395

  • Deposit

    GOODWIN, J.G., 1957, LEAD AND ZINC IN CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 53, NOS. 3 & 4, P. 468

  • Production

    TUCKER AND SAMPSON (1938)

General comments

Subject category Comment text
Deposit VEINS ALONG FRACTURES IN QUARTZITE; SET OF PARALLEL VEINS IN MONZONITE, 1-2 FT. THICK.
Deposit 6 CLAIMS ; 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