Dolman

  

Mine Info

State: California

County: Mariposa

Elevation:

Primary Mineral: Gold

Lat, Long: 37.54972, -120.10778



Dolman MRDS details

Site Name

Commodity

Location

Primary: "Dolman"
Secondary: "Oyler Lode"
Secondary: "Hickman"
Secondary: "Bear Valley"
Primary: Gold
Secondary: Silver
Tertiary: Copper
Tertiary: Iron
State: California
County: Mariposa
District:
 

Land Status

Holdings

Workings

Land ownership:
Administrative Organization:
Type:


Ownership

Production

Deposit

Owner Name: Ellen T. Simpson, Et. Al.
Company ID:
Percent:
Home Office:
Info Year:
Years: -

Year: 1941
Time Period: - 1941
Mined:
Material type: AG
Description: Cp_Grade: ^.003 Oz/Ton Ag
Year: 1940
Time Period: - 1940
Mined:
Material type: AU
Description: Cp_Grade: ^.06 Oz/Ton Au
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: 1894
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 & SWELL


Structure

Alterations

Rocks

Name: Greenstone
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
Ore: Pyrite


Comments

Comment Type:
Location
Comment UTM EST. SE 1/4 29 , NW 1/4 33 . SEC. LINES PROJECTED.
Comment Type:
Deposit
Comment VEIN, ORE SHOOTS
Comment Type:
Workings
Comment THE TOTAL AREA COVERS 1 1/2 MI. OF THE LODE.
Comment Type:
Geology
Comment GEOL.DESC: VEIN VARIES FROM LESS THAN A FT. TO 5 FT. IN PYROXENE ANDESITE GREENSTONES. ORE SHOOTS LESS THAN 30 FT. IN WIDTH.
Comment Type:
Deposit
Comment FORMERLY THE OYLER LODE ON THE FREMONT GRANT.
Comment Type:
Commodity
Comment 60 % OF GOLD IS FOUND IN SULFIDE MINERALS
Comment Type:
Production
Comment DURING OPERATIONS WHICH BEGAN IN 1902, OFFICIAL RECORDS INDICATE 59.1 TONS OF ORE SHIPPED WHICH RETURNED $756.78, OR AN AVERAGE OF $12.80 PER TON. DURING 1939 AND 1940 SOME 393 TONS OF ORE SHIPPED YIELDED 24 OZ. GOLD AND 7 OZ. SILVER. IDLE SINCE 1940.


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. 94 - 5 , 255 .
URL:
Reference Category:
Deposit
Pages:
Reference: LAIZURE, C. MCK., 1935 , CURRENT MINING ACTIVITIES IN THE SAN FRANCISCO DISTRICT WITH SPEC. REF. TO GOLD: CALIF. JOUR. MINES & GEOL., VOL. 31 , NO. 1 , P. 30 - 32 .
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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