Antone Nichelini

The Antone Nichelini is a chromium mine located in Napa county, California at an elevation of 1,470 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: Antone Nichelini
Secondary: Nichelini Mine

Commodity

Primary: Chromium
Tertiary: Platinum
Tertiary: Palladium
Tertiary: Iridium
Tertiary: Ruthenium
Tertiary: Rhodium

Location

State: California
County: Napa

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: Nichelini, A.
Years: 1918 -

Production

Year: 1918
Material type: ORE
Description: Ap_Grade: ^45% Cr2o3 Ave

Deposit

Record Type: Site
Operation Category: 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

Mineral Deposit Model

Model Name: Podiform chromite (minor)

Orebody

Form: LENSES

Structure

Not available

Alterations

Not available

Rocks

Name: Peridotite
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic

Name: Peridotite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Jurassic

Name: Peridotite
Role: Associated
Age Type: Associated Rock
Age Young: Late Jurassic

Analytical Data

Analytical Data: RH=5 PPB
Analytical Data: RU=200 PPB
Analytical Data: IR=48 PPB
Analytical Data: PD=21 PPB
Analytical Data: 1 PGE ANALYSIS: PT=18 PPB

Materials

Ore: Chromite
Gangue: Olivine

Comments

Comment (Location): NO MINE SHOWN ON TOPO MAP; LOCATION GIVEN IS FOR PGE SAMPLE SITE LOCATION

Comment (Production): THE MAIN ORE BODY YIELDED 2,000 TONS IN THE EARLY DAYS OF MINING THE PROPERTY BUT WAS MINED OUT. SMALLER LENSES CONTAINED FROM 5 TO 40 TONS

Comment (Workings): TUNNEL

Comment (Deposit): RECORD M010707 HAS BEEN MERGED AND DELETED.

Comment (Deposit): ORE DEPOSIT MADE UP OF A SERIES OF LENSES

References

Reference (Deposit): DOW, D.H., AND THAYER, T.P., 1946, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 134, PT. 2, CH. 1, P. 24.

Reference (Deposit): CARLSON, C.A., AND OTHERS, 1985, ANALYSES FOR PLATINUM-GROUP ELEMENTS IN SAMPLES FROM PODIFORM CHROMITE DEPOSITS, CALIFORNIA AND OREGON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 85-442, 14 P.

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.