Sims Property

The Sims Property is a chromium mine located in Tuolumne county, California at an elevation of 1,250 feet.

About the MRDS Data:

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.

Mine Info

Name: Sims Property  

State:  California

County:  Tuolumne

Elevation: 1,250 Feet (381 Meters)

Commodity: Chromium

Lat, Long: 37.88667, -120.45528

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.


Satelite image of the Sims Property

Sims Property MRDS details

Site Name

Primary: Sims Property


Commodity

Primary: Chromium


Location

State: California
County: Tuolumne
District: Chinese Camp Area


Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.


Holdings

Not available


Workings

Not available


Ownership

Owner Name: Henry Sims


Production

Year: 1918
Material type: ORE
Description: Ap_Grade: ^35 - 38 % Cr2o3


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada


Mineral Deposit Model

Not available


Orebody

Form: LENSE

Form: LENSE


Structure

Not available


Alterations

Alteration Type: L
Alteration Text: Serpentinized Host Rock


Rocks

Name: Dunite
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic


Analytical Data

Analytical Data: ORE RANGED FROM 35 - 38% CR2O3


Materials

Ore: Chromite


Comments

Comment (Geology): THE DEPOSIT OCCURS IN THE NORTHERN PART OF THE WESTERNMOST PART OF TWO SERPENTINE BELTS THAT TREND NW ACROSS THE COUNTY. THE BELT IS EXPOSED OVER AN AREA 30KM BY 6KM.

Comment (Workings): WORKINGS CONSIST OF A SMALL OPEN CUT AND A WATER FILLED INCLINED SHAFT 60 FT DEEP.

Comment (Location): DEPOSIT LOCATED NEAR THE FOOT OF A LOW HILL.; PREVIOUS QUAD DESIGNATION = SAN JOSE 1:250000


References

Reference (Deposit): CATER, F.W.JR., 1948, CDMG BULL 134, PART 3, CHAPT.1, P. 20

Reference (Production): CATER, 1948, CDMG BULL 134, PART 3, CHAPT. 1, P. 20


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