Cerro Gordo

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

Geologic information

Identification information

Deposit ID 10076617
MRDS ID W023740
Record type Site
Current site name Cerro Gordo
Alternate or previous names Aries Consolidated, Armagh, Bluff Boushey Silver, Ignacio, Morman, New Enterprise, Omega, Pagan, Santa Maria, Summit No. 2 and Union.
Related records 10211830

Geographic coordinates

Geographic coordinates: -117.79174, 36.53968 (WGS84)
Elevation 2591
Relative position 5 MILES NORTH OF KEELER
(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 016S 038E 12,13,23,24;18 California

Comments on the location information

  • UTM ACC. ; INFO FROM LAND.ST :UNDETERMINED

Commodities

Commodity Importance
Lead Primary
Silver Primary
Zinc Primary
Copper Secondary
Gold Secondary

Materials information

Materials Type of material
Anglesite Ore
Pyrite Ore
Smithsonite Ore
Sphalerite Ore
Tetrahedrite Ore
Barite Gangue
Quartz Gangue

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 Metamorphic Rock > Metasedimentary Rock > Marble
    Stratigraphic age (youngest) Late Devonian

Nearby scientific data

(1) -117.79174, 36.53968

Geologic structures

Type of structure Local
Structure description Faults; Both Pre - Intrusive And Post - Intrusive, Pre - Mineral And Post - Mineral. Some With Considerable Displacement.

Ore body information

  • General form LENTICULAR
    Strike N - NW
    Dip 70 SW
    Width 6.1M
    Length 21.34M

Comments on the geologic information

  • GEOL.DESC: PREDOMINANT ROCK IS WHITE MARBLE. SLATE AND IGNEOUS ROCK, WITH DIKES OF DIORITE AND PORPHYRY OCCUR WITHIN MARBLE. THREE PERIODS OF MINERALIZATION ARE RECOGNIZABLE IN THE MINE; EARLIEST OF PYRITE, SECOND OF ARGENTIFEROUS GALENA AND SPHALERITE WITH SOME PYRITE, THE LAST, QUARTZ WITH SUBORDINATE AMOUNTS OF GALENA AND ARGENTIFEROUS TETRAHEDRITE.

Economic information

Economic information about the deposit and operations

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

Mining district

District name Cerro Gordo

Comments on the production information

  • 1943 - 1945 ; GOLDEN QUEEN MIN. CO. SHIPPED 750 - 1,000 TONS OF ORE, ASSAYING 17.5 % PB AND 13.2 OZ/TON AG. TOTAL PRODUCTION IS ESTIMATED TO BE OVER $17,000,000 . RECORDED PRODUCTION SINCE 1906 IS OVER $6,000,000 .

Workings at the site

  • Type of workings Underground
    Length 48279M
    Overall depth 274.32M

Comments on the workings information

  • GREATEST VERTICAL DIMENSION OF STOPES, ABOUT 1,000 FT. DEVELOPED BY 900 FT. SHAFT, LEVELS AT 85 , 200 , 400 , 550 , 700 , AND 900 FT.; 200 FT. WINZE FROM 900 FT. LEVEL EXTENDS TO 1,000 AND 1,100 FT. LEVELS: SECOND WINZE 250 FT. DEEP GAVE ACCESS TO 1030 AND 1150 LEVEL SOUTH OF SHAFT. TOTAL UNDERGROUND WORKINGS ABOUT 30 MILES.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS W023740

Bibliographic references

  • Deposit

    GOODWIN, J. C., 1957 , LEAD AND ZINC IN CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 3 & 4 ; DIV. OF MINES, P. 460

  • Deposit

    TUCKER, W. B. AND SAMPSON, R. J., 1938 , MINERAL RESOURCES OF INYO COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 34 , NO. 4 ; DIV. OF MINES, P. 431 - 433

General comments

Subject category Comment text
Deposit 6 ORE BODIES; CHINA STOPE, JEFFERSON DIABASE DIKE, LA DESPRECIADA, UNION AND BELSHAW. FORMED ALONG STEEP, NORTH - NORTHWEST FISSURES IN DEVONIAN MARBLE.
Deposit COMPRISED OF 550 ACRES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1978 Fraticelli, L. A. (Albers, J.) U.S. Geological Survey