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
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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	ListMap

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