O'Byrne Mine

The O'Byrne Mine is a tungsten mine located in Pershing county, Nevada at an elevation of 5,299 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: O'Byrne Mine
Secondary: Part of Summit-Obyrne Mine
Secondary: NBMG Sample Site 2659

Commodity

Primary: Tungsten

Location

State: Nevada
County: Pershing
District: Mill City 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

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: M

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

Not available

Structure

Type: R
Description: Shank Fault, Which Here Strikes Just W Of N-S, Dips W

Type: L
Description: Faults

Alterations

Not available

Rocks

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

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

Analytical Data

Analytical Data: SAMPLE 2659, A DUMP SAMPLE OF SCHEELITE-BEARING QUARTZ-EPIDOTE-GARNET SKARN, CONTAINS 3 % FE, 0.7 % MG, 7 % CA, 0.-05 % TI, 1500 PPM MN, 7 PPM AG, 1 PPM BE, 150 PPM BI, 20 PPM C-D, 15 PPM CR, 15 PPM CU, 15 PPM MO, 5 PPM NI, 300 PPM PB, 20 P-PM SN, 500 PPM SR, 700 PPM V, 100 PPM W, 10 PPM Y, 500 PPM ZN,- 20 PPM ZR.

Materials

Ore: Scheelite
Gangue: Garnet
Gangue: Quartz
Gangue: Epidote

Comments

Comment (Geology): THE SUMMIT-O'BYRNE BED STRIKES NE, DIPS STEEPLY SE AND EXTENDS FROM THE SOUTH RIM OF THE GEORGE MINE PIT ACROSS ST-ANK HILL AND INTO STANK CANYON, WHERE IT COMES IN CONTACT WITH- THE SMALL SOUTHWEST STOCK. ORE IN THE TACTITE BODY WAS LIMITE-D TO A TRIANGULAR SEGMENT OF THE BED LYING BETWEEN THE SURFACE- AND THE PLANE OF THE STANK FAULT. ORE ON THE SOUTH WAS LIMITE-D BY THE GRADATIONAL LIMESTONE-TACTITE BOUNDARY.

Comment (Deposit): CONSISTS OF TUNNELS & ADITS DRIVEN IN O'BYRNE BED, PART OF THE HUMBOLDT BED. THIS SEGMENT OF THE BED HAS BEEN SLIGHTLY OFF SET ACROSS A PORTION OF THE SOUTHWEST STOCK WHICH CUTS BETWEEN THE SUMMIT AND O'BYRNE WORKINGS. THE BED EXTENDS FROM THIS POINT SOUTH TO ITS CONTACT WITH THE MAIN PORTION OF THE SOUGHWEST STOCK, SOUTH OF THE LOWER O'BYRNE ADIT. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Deposit): THE O'BYRNE BED IS PART OF THE HUMBOLDT BED THAT HAS BEEN SLIGHTLY OFFSET ACROSS A PORTION OF THE SOUTHWEST STOCK.

Comment (Workings): 2 ADITS AND A CONNECTING WINZE

Comment (Location): ON STANK HILL BETWEEN SPRINGER AND STANK CANYONS

References

Reference (Deposit): KERR, 1946, TUNGSTEN MINERALIZATION IN THE UNITED STATES; GSA MEMOIR 15

Reference (Deposit): TINGLEY, J.V., 1973, UNPUBLISHED REPORT

Reference (Deposit): TINGLEY, J. V., 1984, FIELD EXAMINATION

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

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.