Koon Ranch

The Koon Ranch is a gold mine located in Trinity county, California at an elevation of 479 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

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.

Site Name

Primary: Koon Ranch
Secondary: South Fork Trinity River

Commodity

Primary: Gold
Secondary: Platinum
Tertiary: Copper
Tertiary: Osmium
Tertiary: Iridium
Tertiary: Iron
Tertiary: Rhodium
Tertiary: Nickel
Tertiary: Palladium
Tertiary: Ruthenium

Location

State: California
County: Trinity
District: Trinity River (South Fork) Area

Land Status

Land ownership: National Forest
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

Type: Surface

Ownership

Owner Name: J. A. Koon
Years: 1917 -

Production

Not available

Deposit

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

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Klamath Mountains

Mineral Deposit Model

Model Name: Placer Au-PGE

Orebody

Form: STREAM SEDIMENT DEPOSITS

Structure

Not available

Alterations

Not available

Rocks

Name: Gravel
Role: Host
Age Type: Host Rock
Age Young: Holocene

Analytical Data

Not available

Materials

Ore: Gold
Ore: Platinum
Ore: Iridosmine

Comments

Comment (Commodity): AU AND PGE FINE AND FLAKY. SNETSINGER GIVES LOCALITY OF PT NUGGET AS STREAM GRAVELS FROM SOUTH FORK OF TRINITY RIVER. IRIDOSMINE IDENTIFIED BY ELECTRON MICROPROBE

Comment (Location): IN SIX RIVERS NATIONAL FOREST. ON SOUTH FORK TRINITY RIVER. LOCATION GIVEN IS FOR 1 MILE MARKER SHOWN ON TOPO MAP

Comment (Production): PLATINUM GRADE DOES NOT SEEM REASONABLE (J PETERSON, 02/92)

Comment (Workings): HYDRAULIC

Comment (Geology): SLATE BEDROCK

Comment (Location): Used PLS and GIS to determine lat/long. Property is about 2 miles above mouth of South Fork of Trinity River. The river is the border between two counties, and this is in the river and bank.

References

Reference (Deposit): SNETSINGER, K.G., 1971, A PLATINUM-METAL NUGGET FROM TRINITY COUNTY, CALIFORNIA: AMERICAN MINERALOGIST, V. 56, NO. 5-6, P. 1101-1105.

Reference (Deposit): LOGAN, C.A., 1919, PLATINUM AND ALLIED METALS IN CALIFORNIA: CALIFORNIA STATE MINING BUREAU BULLETIN 85, P. 88.

Reference (Deposit): CLARK, W.B., 1970, GOLD DISTRICTS OF CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY BULLETIN 193, P. 143-144.

California Gold

"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.