Thompson Ranch Occurrence

The Thompson Ranch Occurrence is a chromium mine located in Nevada county, California at an elevation of 1,480 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: Thompson Ranch Occurrence  

State:  California

County:  Nevada

Elevation: 1,480 Feet (451 Meters)

Commodity: Chromium

Lat, Long: 39.09472, -121.10750

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 Thompson Ranch Occurrence

Thompson Ranch Occurrence MRDS details

Site Name

Primary: Thompson Ranch Occurrence


Commodity

Primary: Chromium


Location

State: California
County: Nevada
District: Wolf Creek 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 Yue
Years: 1918 -


Production

Not available


Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1918
Years of Production:
Organization:
Significant: N


Physiography

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


Mineral Deposit Model

Not available


Orebody

Not available


Structure

Not available


Alterations

Not available


Rocks

Not available


Analytical Data

Not available


Materials

Ore: Chromite


Comments

Comment (Workings): IN 1918 WORKINGS CONSISTED OF SHAFT 20 FT. DEEP, DRIFT 25 FT. LONG FROM BOTTOM OF SHAFT.

Comment (Deposit): COMPRISES 640 ACRES. REPORTS ON DEPOSITS IN SECS. 4, 5 AND 16 HAVE BEEN IN CONFLICT, BUT INFORMATION AS SHOWN ABOVE APPEARS TO BE CORRECT FOR THIS LOCATION.

Comment (Production): IN 1918, IT WAS REPORTED THAT 28 LONG TONS OF ORE HAD BEEN MINED & IT WAS THOUGHT THE ORE BODY MIGHT YIELD AS MUCH AS 300 LONG TONS. HOW MUCH OF ORE WAS ACTUALLY SHIPPED IS NOT KNOWN.


References

Reference (Deposit): D.O.M. BULL. 134, PT. III, CHAP. 5, PP. 247-8, P. 13

Reference (Deposit): CALIF. JOUR. MINES & GEOLOGY, V. 37, NO. 3, JULY 1941, P. 466


California Gold

Where to Find Gold in California

"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.