Sonoma Chrome, Inc. Deposit

The Sonoma Chrome, Inc. Deposit is a chromium mine located in Sonoma county, California.

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: Sonoma Chrome, Inc. Deposit  

State:  California

County:  Sonoma

Elevation:

Commodity: Chromium

Lat, Long: 38.45139, -122.97139

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 Sonoma Chrome, Inc. Deposit

Sonoma Chrome, Inc. Deposit MRDS details

Site Name

Primary: Sonoma Chrome, Inc. Deposit
Secondary: Camp Meeker
Secondary: Meeker Chrome Mine


Commodity

Primary: Chromium


Location

State: California
County: Sonoma


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: Neuman, Bentley
Home Office: Santa Clara, Ca.
Years: 1942 -

Owner Name: Meeker Estate, M. C.
Home Office: Camp Meeker, Ca.
Years: 1918 -


Production

Year: 1918
Material type: ORE CR
Description: Ap_Grade: ^39-42% Chromite


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: Pacific Border Province
Physiographic Section: California Coast Ranges
Physiographic Detail: Bohemian Grove


Mineral Deposit Model

Not available


Orebody

Form: LENSE, POD


Structure

Not available


Alterations

Not available


Rocks

Not available


Analytical Data

Analytical Data: LOW GRADE ORE RANGES 15-20% CR2O3.
Analytical Data: HIGH GRADE ORE RANGES 42 TO 51% CR2O3 WITH CR/FE OF 3:1


Materials

Ore: Chromite


Comments

Comment (Deposit): CHROMITE DEPOSITS ALINED IN 3 MIAN ORE-BEARING ZONES, WHICH STRIKE N40W. IN 1942, LOWGRADE ORE WAS EXPOSED TO A DEPTH OF 4 FT. OVER TWO AREAS APPROX. 100 FT. BY 50 FT. EACH, APPROX. 3/4 MILE APART FROM EACH OTHER. THIRD ORE BODY A SINGLE LENSE 60 FT. DEEP.

Comment (Workings): PRINCIPAL WORKING WAS AN OPEN CUT 125 FT. LONG BY 20 FT. DEEP, IN WHICH A 55 FT SHAFT WAS SUNK AT THE LOWER END. FROM THE SHAFT, A DRIFT HAD BEEN DRIVEN 40 FT IN ORE, ALONG STRIKE BACK UNDER THE CUT. OTHER WORKINGS INCLUDED PITS LESS THAN 10 FT. DEEP.

Comment (Development): B. NEWMAN LEASED 2000 ACRES OF THE MEEKER RANCH IN 1942 IN ORDER TO CLEAN OUT OLD CHROMITE WORKINGS AND DEVELOP LOW GRADE ORE.


References

Reference (Deposit): LOGAN, C.A., 1918, CHROMIUM, IN BRADLEY, W.W., AND OTHERS, MANGANESE AND CHROMIUM IN CALIF.: CALIF. STATE MINING BUREAU BULLETIN NO. 76, P. 201.

Reference (Deposit): DOW, D.H. AND THAYER, T.P., 1946, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIF.: CALIF. DIVISION OF MINES BULLETIN 134 PART 2, CHAPT. 1, P. 28,36.


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