Black Diamond Prospect

The Black Diamond Prospect is a manganese mine located in Humboldt county, Nevada at an elevation of 5,801 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: Black Diamond Prospect
Secondary: Charleston Hills Mining Co.

Commodity

Primary: Manganese

Location

State: Nevada
County: Humboldt
District: Harmony 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: Charleston Hill National Mines Co., Mrs. Mary L. Clough, President,Winnemucca, Nv
Years: 1959 -

Owner Name: Black Diamond Mining Co.
Years: 1947 -

Production

Year: 1947
Material type: ORE
Description: Ap_Grade: ^Average 28 % Mn

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1947
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: Volcanogenic Mn

Orebody

Form: LENS, BLANKET

Form: LENS, BLANKET

Form: LENS, BLANKET

Structure

Type: L
Description: Folding

Alterations

Alteration Type: L
Alteration Text: Silicification

Rocks

Not available

Analytical Data

Analytical Data: USBM ORE ANALYSIS : 22.9 % MN, 2.1 % FE, 55.8 % SI02, 63.4 % INSOL, 0.039 % P, 1.9 % AL203, NO ZN, 1.06 % BA, 0.1 % CA.

Materials

Ore: Pyrolusite
Ore: Braunite
Ore: Manganite
Ore: Hematite
Ore: Psilomelane
Gangue: Chalcedony
Gangue: Bementite
Gangue: Jasper
Gangue: Rhodonite

Comments

Comment (Location): A HALF MILE NORTH OF BLACK DIABLO MINE AND ABOUT A QUARTER MILE SOUTH OF O'LEARY PROSPECT. LOCATED ON EAST SIDE OF SONOMA RANGE AND MARKED ON MAP AS 'OPEN PIT.' ACCESS BEST VIA PUMPERNICKEL VALLEY (1984). . INFO FROM LAND.ST :(1972); 1:24000 QUADRANGLE MAP IS A 1990 EDITION

Comment (Deposit): ORE OCCURS AS MASSIVE, TOUGH MANGANESE OXIDES THAT REPLACE SEDIMENTARY ROCK. INTERBEDDED WITH THE ORE ARE THIN BEDS OF SILICIFIED SHALE AND LENSES OF JASPER RICH IN HEMATITE. SECOND OUTCROP IS 400 FEET NORTH OF FIRST AND THIRD IS 600 FEET SOUTH OF CENTRAL OUTCROP.

Comment (Workings): SMALL OPEN PIT

Comment (Geology): THE ORE IS IN THE FORM OF AN ALTERED SEDIMENTARY LENS OUTCROPPING IN THREE PLACES IN SEDIMENTARY BEDS AT TOP OF A W-DIPPING QUARTZITE-CALCAREOUS SHALE SERIES LYING EAST OF THE CROPPING AND IN CONTACT ON THE WEST WITH A DIKE OF GRANODIORITE PORPHYRY WHICH EXHIBITS NO CONTACT METAMORPHISM. THE UPPER PART OF THE SEDIMENTARY SERIES CONSISTS MAINLY OF CHERT OR SILICIFIED CALCAREOUS SHALES WITH JASPER PROMINENT IN THE LOWER PART OF THIS SECTION. THE ORE HORIZON IS IN THE CHERT AND JASPER. IT IS COMPOSED OF FINELY DIVIDED SILICA AND MANGANESE OXIDES IN A MORE OR LESS DEFINITE BED.

Comment (Deposit): THIS RECORD HAS BEEN MERGED WITH M242601, WHICH HAS BEEN DELETED.

References

Reference (Deposit): SHIBLER, B.K., AND WELLS R.R., 1951, CONNTRATION OF OXIDE AND SILICATE MANGANESE ORES FROM THE VICINITY OF GOLCONDA NEVADA: USBM REPORT ON INVESTIGATION 4754.

Reference (Deposit): TRENGROVE, R.R., 1959, RECONNAISSANCE OF NEVADA MANGANESE DEPOSITS: USBM REPORT ON INVESTIGATION 5446.

Reference (Deposit): PARDEE, J.T., AND NES, E.L., 1920, CONTRIBUTIONS TO ECONOMIC GEOLOGY: USGS BULL. 710-F, P. 239-240.

Reference (Production): TRENGROVE (1959), P16.

Reference (Deposit): FERGUSON, H.G., MULLER S.W., AND ROBERTS, R.J., 1951, GEOLOGY OF WINNEMUCCA QUADRANGLE, PERSHING D HUMBOLDT COUNTIES, NEVADA: USGS MAP GQ-11.

Reference (Deposit): STAFF, 1983, UNPUBLISHED USBM CRIB DATA: NBMG UNPUBLISHED (TINGLEY) FILES.

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.