A-J Burkhart

  

Mine Info

State: California

County: Mariposa

Elevation:

Primary Mineral: Gold

Lat, Long: 37.56139, -120.17000



A-J Burkhart MRDS details

Site Name

Commodity

Location

Primary: "A-J Burkhart"
Primary: Gold
Tertiary: Copper
State: California
County: Mariposa
District:
 

Land Status

Holdings

Workings

Land ownership:
Administrative Organization:
Type:


Ownership

Production

Deposit

Owner Name: B. F. And Ruth L. Burkhart
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: 1925
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: PINCH AND SWELL


Structure

Alterations

Rocks

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


Analytical Data

Materials

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


Comments

Comment Type:
Production
Comment WORKED INTERMITTENTLY UP TO THE FALL OF 1954; MOST RECENT OPERATION BY RICHARDSON BROS. TERMINATED MAY, 1954. RECENT PRODUCTION SMALL WITH ORE AVERAGING ABOUT 0.4 OZ. OF GOLD PER TON.
Comment Type:
Deposit
Comment VEIN
Comment Type:
Workings
Comment FIRST OPENED IN 1920'S WHEN A 220-FT. ADIT WAS DRIVEN; A 150 FT. SHAFT AND 3 LEVELS 35 FT. APART ARE THE PRINCIPAL ACTIVE WORKINGS.
Comment Type:
Deposit
Comment ONE UNPATENTED CLAIM. VEIN MINERALS INCLUDE PYRITE, CHALCOPYRITE AND FREE GOLD WITH MINOR AMOUNTS OF GREEN COPPER CARBONATES.
Comment Type:
Deposit
Comment Discovery Year: 1920'S
Comment Type:
Commodity
Comment MINOR AMOUNTS GREEN CU CARBONATES
Comment Type:
Location
Comment PROBABLY NE 1/4 - UTM EST.


References

Reference Category:
Deposit
Pages:
Reference: BOWEN O. E., JR., & GRAY, H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIF.: CALIF. JOUR. MINES & GEOL., VOL. 53 , NOS. 1 & 2 , P. 232 .
URL:
Reference Category:
Deposit
Pages:
Reference: WALLACE, R. E., ETAL, 1957 , THE MINERAL INDUSTRY OF CALIF.: U. S. BUR. OF MINES MINERALS YEARBOOK FOR 1954 , VOL. 3 , P. 220 .
URL:
Reference Category:
Production
Pages:
Reference: BOWEN AND 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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