The La Porte is a gold mine located in Plumas county, California at an elevation of 5,000 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: 5,000 Feet (1,524 Meters)
Commodity: Gold
Lat, Long: 39.68917, -120.98250
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.
La Porte MRDS details
Site Name
Primary: La Porte
Commodity
Primary: Gold
Tertiary: Platinum
Location
State: California
County: Plumas
District: La Porte District
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
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Deposit Type: Stream Placer
Operation Type: Unknown
Year First Production: 1848
Years of Production:
Organization:
Significant: Y
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
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: Pliocene
Analytical Data
Analytical Data: CONCENTRATE YIELDED $29.76/TON AU (2.977 OZ/TON, 100 PPM), $19.80/TON PT (0.210 OZ/TON, 7.2 PPM), CONCENTRATION NOT KNOWN
Materials
Ore: Gold
Comments
Comment (Deposit): RECORD W017603 HAS BEEN MERGED AND DELETED. SEE ALSO: MRDS W025377.
Comment (Production): IN ITS HEYDAY, THE LOWER GRAVELS YIELDED 0.1-1 OZ/YD
Comment (Geology): AMPHIBOLITE BEDROCK. DEPOSIT IS WITHIN TERTIARY GRAVELS OF OLD YUBA RIVER DRAINAGE
Comment (Location): IN PLUMAS NATIONAL FOREST. LOCATION GIVEN IS FOR PLACER DIGGINGS AT SPANISH FLAT LESS THAN 1 MI SOUTHEAST OF LA PORTE
Comment (Commodity): OLD MRDS (WEEKS) DISTRICT RECORD INDICATED PRESENCE OF AG ALSO
Comment (Development): INTERMITTENTLY ACTIVE UNTIL AFTER DEPRESSION
Comment (Deposit): MOST OF GOLD NEAR BEDROCK
Comment (Workings): DRIFT MINING, HYDRAULIC 1850'S-1880'S
References
Reference (Deposit): CLARK, W.B., 1970, GOLD DISTRICTS OF CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY BULLETIN 193, P. 86.
Reference (Deposit): DAY, D.T., AND RICHARDS, R.H., 1906, USEFUL MINERALS IN THE BLACK SANDS OF THE PACIFIC SLOPE: U.S. GEOLOGICAL SURVEY MINERAL RESOURCES OF THE UNITED STATES, CALENDAR YEAR 1905, P. 1186-1187.
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.
