White Porphyry Group

  

Mine Info

State: California

County: Mariposa

Elevation: 2,001 feet (610 meters)

Primary Mineral: Gold

Lat, Long: 37.62861, -120.08222



White Porphyry Group MRDS details

Site Name

Commodity

Location

Primary: "White Porphyry Group"
Primary: Gold
State: California
County: Mariposa
District: Cat Town
 

Land Status

Holdings

Workings

Land ownership:
Administrative Organization:
Type: Surface/Underground


Ownership

Production

Deposit

Owner Name: F. E. Ryberg
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:
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:


Structure

Alterations

Rocks

Name: Mafic Intrusive Rock
Role: Associated
Description:
Age Type: Host Rock
Age in Years:
Dating Method:
Material Analyzed:
Age Young: Late Permian
Age Old:


Analytical Data

Materials

Gangue: Albite
Gangue: Quartz


Comments

Comment Type:
Location
Comment UTM EST ALT EST
Comment Type:
Deposit
Comment VEIN, DIKE 30 - 50 FT THICK
Comment Type:
Workings
Comment 2 PARALLEL LINES ON EITHER WALL OF ALBITITE DIKE TRACEABLE FOR OVER 1 MILEFROM LENGTH AND PERSISTANCE OF STOPES AND THE KNOWN HIGH GRADE OF ORE IN POCKETS IN THIS DISTRICT, THE YIELD MUST HAVE BEEN LARGE. THE MOST NORTHERLY WORKINGS WERE BEING OPERATED BY RYBERG IN SEPT. 1955FROM LENGTH AND PERSISTANCE OF STOPES AND THE KNOWN HIGH GRADE OF ORE IN POCKETS IN THIS DISTRICT, THE YIELD MUST HAVE BEEN LARGE. THE MOST NORTHERLY WORKINGS WERE BEING OPERATED BY RYBERG IN SEPT. 1955
Comment Type:
Geology
Comment CALAVERAS GP.,


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. 181 - 183 , 315
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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