Frenchman and Eyraud Claims

The Frenchman and Eyraud Claims is a tungsten mine located in Humboldt county, Nevada at an elevation of 6,250 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: Frenchman and Eyraud Claims
Secondary: Osgood Creek Prospects
Secondary: Osgood Claims

Commodity

Primary: Tungsten
Tertiary: REE
Tertiary: Zirconium
Tertiary: Magnesite
Tertiary: Iron
Tertiary: Calcium
Tertiary: Manganese
Tertiary: Barium-Barite
Tertiary: Vanadium
Tertiary: Zinc
Tertiary: Molybdenum
Tertiary: Nickel
Tertiary: Tin
Tertiary: Boron-Borates

Location

State: Nevada
County: Humboldt
District: Potosi District

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: Cordex (Part) And Frm Corp (Part),
Years: 1984 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1946
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Basin And Mountains

Mineral Deposit Model

Model Name: W skarn

Orebody

Form: IRREGULAR

Structure

Type: R
Description: Nw-Trending Fault

Alterations

Not available

Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cambrian

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Analytical Data

Analytical Data: SAMPLE 2610 OF GARNET SKARN WITH FINE-GRAINED SUBHEDRAL TO ANHEDRAL GARNET, CLOTS OF CINNAMON-RED LIMONITE AND SUB-HEDRAL QUARTZ, CONTAINS 15 % FE, 0.5 % MG, 15 % CA, 0.1 % TI, -+5000 PPM MN, 3 PPM AG, 30 PPM B, 1000 PPM BA, 30 PPM CO, 100 -PPM CU, 150 PPM MO, 100 PPM NI, 50 PPM SN, 700 PPM V, 200 PPM -W, 20 PPM Y, 300 PPM ZN, 15 PPM ZR.

Materials

Ore: Scheelite

Comments

Comment (Location): W 1/2 OF SW 1/4 OF SEC. 17; N 1/2 OF NW 1/4 OF SEC 20. PROPERTY COVERS MOST OF THE CONTACT ZONE BETWEEN THE VALLEY VIEW AND THE KIRBY MINES.

Comment (Deposit): TACTITE FLOAT CONTAINING SCHEELITE HAS BEEN FOUND IN THESE AREAS OF IRREGULARITIES IN THE GRANODIRITE/LIMESTONE CONTACT. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Comment (Development): STAKED IN 1920'S, EXPLORED IN 1950'S AND 1970'S; NO PRODUCTION. NO ACTIVITY AT TIME OF EXAMINATION IN 1984.

Comment (Deposit): SMALL TACTITE (SKARN) BODIES FORMED IN CAMBRIAN PREBLE LIMESTONE ON EAST CONTACT OF OSGOOD GRANODIORITE. THE LARGE-ST LENSE OF TACTITE OCCURS ON A SMALL HILL SOUTH OF OSGOOD CRE-EK NEAR THE COMMON SOUTH CORNERS OF SECTION 17 AND 18. HERE TH-E PREBLE SECTION HAS FORMED AN EMBAYMENT IN THE CONTACT; THE L-IMESTONES DIP ABOUT 30NE DOWN THE AXIS OF THE EMBAYMENT.

Comment (Workings): CUTS, TRENCHES ALONG CONTACT ZONE.

Comment (Geology): NEAR BY IRREGULARITIES IN THE TREND OF THE GRANODIRITE/LIMESTONE CONTACT.

References

Reference (Deposit): HOBBS, S.W., AND CLABAUGH, S.E., 1946, TUNGSTEN DEPOSITS OF THE OSGOOD RANGE, HUMBOLDT COUNTY, NEV. UNIV. NEV. BULL. V. 40, NO. 5; GEOL & MIN. SER. NO. 44.

Reference (Deposit): TINGLEY, J. V., 6 SEP 84, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

Reference (Deposit): NBMG STAFF, 1985, NBMG OFR 85-3

Reference (Deposit): NBMG MINING DISTRICT FILE 136, ITEM 28, UNPUBLISHED USBM DATA.

Reference (Deposit): STAGER, H. K., IN PREPARATION, NBMG BULL ON TUNGSTEN DEPOSITS OF NEVADA

Reference (Deposit): HOTZ, P.E., AND WILLDEN, R, 1964, GEOLOGY AND MINERAL DEPOSITS OF THE OSGOOD MOUNTAINS QUADRANGLE HUMBOLDT COUNTY, NEVADA; U.S.G.S. PROF. PAPER 431.

Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.