Washington

  

Mine Info

State: California

County: Mariposa

Elevation: 1,024 feet (312 meters)

Primary Mineral: Gold

Lat, Long: 37.52639, -120.22361



Washington MRDS details

Site Name

Commodity

Location

Primary: "Washington"
Secondary: "Jenny Lind"
Secondary: "Red Cloud"
Primary: Gold
Secondary: Copper
Secondary: Lead
Secondary: Silver
State: California
County: Mariposa
District: Hornitos
 

Land Status

Holdings

Workings

Land ownership:
Administrative Organization:
Type: Underground


Ownership

Production

Deposit

Owner Name: Pacific Mining Co.
Company ID:
Percent:
Home Office:
Info Year:
Years: -

Year: 1942
Time Period: 1939 - 1942
Mined:
Material type: PB
Description: Cp_Grade: ^0.14 Oz Ag/Ton
Year: 1942
Time Period: 1939 - 1942
Mined:
Material type: CU
Description: Cp_Grade: ^0.064 Lb Pb/Ton
Record Type: Site
Operation Category: Past Producer
Deposit Type:
Plant Type:
Plant Subtype:
Operation Type: Unknown
Mining Method:
Milling Method:
Year First Production:
Year Last Production:
Discovery Year: 1850
Discovery Method:
Years of Production:
Organization:
Significant: N
Deposit Size: M


Physiography

Mineral Deposit Model

Orebody

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Trough
Physiographic Detail:
Name:
Form:


Structure

Alterations

Rocks

Name: Hornblendite
Role: Associated
Description:
Age Type: Host Rock
Age in Years:
Dating Method:
Material Analyzed:
Age Young: Late Jurassic
Age Old:


Analytical Data

Materials

Ore: Chalcopyrite
Ore: Pyrite
Ore: Gold
Gangue: Quartz
Gangue: Ankerite


Comments

Comment Type:
Production
Comment 1851 6 STAMP MILL PRODUCED 1000 OZ AU/DAY. SOME BONANZA ORE, BUT RECENT PRODUCTION FROM ORE BETWEEN $6.50 - $7/TON. ORE AVG. $25/TON AT $13/OZ IN MIDDLE 1870'S .
Comment Type:
Deposit
Comment VEIN, AVG 6 - 8 FT THICK. ALSO MASSES OF WALL ROCK IMPREGNATED W/AURIFEROUS PYRITE RUNNING 0.09 OZ AU/TON
Comment Type:
Workings
Comment 4 SHAFTS, EXTENSIVE DRIFTING & STOPES
Comment Type:
Geology
Comment WALL ROCKS ARE MAINLY MICACEOUS AND AMPHIBOLE-BEARING SCHISTS AND DARK QUARTZ-BIOTITE HORNFELSES OF UPPER JURASSIC AGE. VEIN IS ACCOMPANIED BY A LIGHT-COLORED FELSITIC DIKE WHICH ADJOINS THE VEIN ON THE FOOTWALL SIDE IN THE SOUTHEAST WORKINGS AND ON THE HANGING WALL SIDE IN THE NORTHWEST WORKINGS. SMALL, IRREGULAR INTRUSIONS OF HORNBLENDIC GRANITIC ROCK PENETRATE TO THE SURFACE. MUCH OF THE METAMORPHIC ROCK HAS BEEN DERIVED FROM PLATY, TUFFACEOUS METASEDIMENTS.
Comment Type:
Deposit
Comment PATENTED ; INFO.SRC : 1 PUB LIT


References

Reference Category:
Production
Pages:
Reference: BOWEN & GRAY 1957
URL:
Reference Category:
Deposit
Pages:
Reference: BOWEN, O. E., JR., GRAY, C. H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 53 , NOS. 1 AND 2 , P. 179 - 181 , 314
URL:

Did You Know.......

A mine is a hole in the ground, owned by a liar.
-Mark Twain

About The MRDS Mines Database

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

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