The Valdor Dredge is a gold mine located in Trinity county, California at an elevation of 1,378 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
Elevation: 1,378 Feet (420 Meters)
Commodity: Gold
Lat, Long: 40.76556, -123.09528
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.
Valdor Dredge MRDS details
Site Name
Primary: Valdor Dredge
Secondary: Hertevant Mine
Secondary: Trinity Center
Commodity
Primary: Gold
Secondary: Platinum
Tertiary: Iridium
Tertiary: Osmium
Location
State: California
County: Trinity
District: Trinity River 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
Type: Surface/Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Deposit Type: Stream Placer
Operation Type: Unknown
Year First Production: 1916
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: Alluvium
Role: Host
Age Type: Host Rock
Age Young: Holocene
Analytical Data
Analytical Data: AVERAGE ANALYSIS OF PGE SAMPLES YIELDED 41.97% PT, 52.73% OSMIRIDIUM, 1.30% AU (LOGAN, P. 109), BUT VALUES VARY CONSIDERABLY. PT:AU=1.25:100. TABLING OF BLACK SAND CONCENTRATE FROM 1 TON OF SAND CARRIES 0.112 OZ AU, 0.016 OZ PT, 0.014 OZ OSMIRIDIUM. GOLD FINENESS = $16-19/OZ
Materials
Ore: Gold
Comments
Comment (Location): LOCATION GIVEN IS WHERE VALDOR GULCH ENTERS TRINITY RIVER ON COOPERS BAR
Comment (Commodity): PT OCCURS AS FINE FLAKES AND CRYSTALLINE SHARP PIECES
Comment (Production): LARGEST PRODUCER OF PT IN TRINITY COUNTY (LOGAN). 900,000 YD DREDGED THROUGH 1917
Comment (Deposit): AU FOUND WITHIN 3 FT OF BEDROCK
Comment (Workings): DREDGING, SURFACE MINING, DRIFT MINING, HYDRAULIC
References
Reference (Deposit): CLARK, W.B., 1970, GOLD DISTRICTS OF CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY BULLETIN 193, P. 143-144.
Reference (Deposit): LOGAN, C.A., 1919, PLATINUM AND ALLIED METALS IN CALIFORNIA: CALIFORNIA STATE MINING BUREAU BULLETIN 85, P. 84-85, 35.
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.
