Louisa

  

Mine Info

State: California

County: Mariposa

Elevation: 1,726 feet (526 meters)

Primary Mineral: Gold

Lat, Long: 37.7075, -120.19528



Louisa MRDS details

Site Name

Commodity

Location

Primary: "Louisa"
Secondary: "Louise"
Secondary: "Louise Point"
Primary: Gold
State: California
County: Mariposa
District:
 

Land Status

Holdings

Workings

Land ownership: Private
Administrative Organization:
Type: Underground


Ownership

Production

Deposit

Owner Name: Lautenschlager, Walter J.
Company ID:
Percent:
Home Office:
Info Year:
Years: -

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: 1855
Discovery Method:
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

Mineral Deposit Model

Orebody

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Physiographic Detail:
Name:
Form: TABULAR TO LENTICULAR


Structure

Alterations

Rocks

Alteration Type: L
Alteration:
Alteration Text: Hydrothermal Alteration Of Serpentine
Name: Slate
Role: Host
Description:
Age Type: Host Rock
Age in Years:
Dating Method:
Material Analyzed:
Age Young: Late Jurassic
Age Old:


Analytical Data

Materials

Ore: Gold
Gangue: Quartz
Gangue: Ankerite


Comments

Comment Type:
Deposit
Comment VEIN
Comment Type:
Geology
Comment GEOL.DESC: BULK OF THE VEIN CONSISTS OF QUARTZ, MARIPOSITE, ANKERITE ROCK DERIVED FROM HYDRO THERMAL ALTERATION OF SERPENTINE. UPPER OXIDISED PART OF THE VEIN HAS BEEN CONVERTED TO A SPONGY, RUST COLORED, EARTHY ROCK CONSISTING CHIEFLY OF YELLOW IRON OXIDES INTERMIXED WITH QUARTZ STRINGERS. THE VEIN SYSTEM LIES ALONG THE CONTACT OF THE AMADOR GROUP AND MARIPOSA FORMATION.
Comment Type:
Workings
Comment VERTICAL NELSON SHAFT 375 FT. W/3 LEVELS AND AIR SHAFT 150 FT. DEEP, 850 FT. DRIFTS, CROSSCUTS 775 FT. AND 600 FT. WINZES.
Comment Type:
Location
Comment UTM ACC. NW 1/4
Comment Type:
Production
Comment PRINCIPAL ACTIVITY 1894 - 1900 WHEN OPERATORS SPENT MORE THAN $56,000 IN IMPROVEMENTS & DEVELOPMENT.


References

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. 119 - 120 , 278 .
URL:
Reference Category:
Deposit
Pages:
Reference: CASTELLO, W. O., 1921 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY IN SEVENTEENTH REPORT OF THE STATE GEOLOGIST: CALIFORNIA STATE MINING BUREAU. P. 122 .
URL:
Reference Category:
Deposit
Pages:
Reference: LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU. P. 96 .
URL:
Reference Category:
Deposit
Pages:
Reference: AUBURY, L. E., 1904 , REGISTER OF MINES AND MINERALS, MARIPOSA COUNTY CALIFORNIA: CALIFORNIA STATE MINING BUREAU, P. 12 .
URL:
Reference Category:
Production
Pages:
Reference: BOWEN & GRAY 1957
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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