Boss Mine

Site Name

Primary: Boss Mine
Secondary: Boss Gold Mining Co.
Secondary: Platinum Gold Mining Co.

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Commodity

Primary: Gold
Primary: Silver
Primary: Platinum
Primary: Palladium
Secondary: Copper
Secondary: Lead
Tertiary: Titanium, Metal

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Location

State: Nevada
County: Clark
District: Goodsprings (Yellow Pine) District

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Land Status

Land ownership: BLM Administrative Area
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.

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Holdings

Not available

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Workings

Type: Underground

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Ownership

Owner Name: Yount, S. E.
Home Office: Los Angeles, Calif.

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Production

Year: 1914
Material type: ORE
Description: Ap_Grade: ^386.49 Oz Au, 322 Oz Ag, 13,194 Lb Cu, 33 Lb Pb
Year: 1918
Material type: ORE
Description: Ap_Grade: ^170.58 Oz Au, 1.755 Oz Ag, 42.1 Oz Pt, 35.7 Oz Pd, 129,972 Lb Cu
Year: 1917
Material type: ORE
Description: Ap_Grade: ^438.25 Oz Au, 2,506 Oz Ag, 138.0 Oz Pt, 355.0 Oz Pd, 199,421 Lb Cu
Year: 1916
Material type: ORE
Description: Ap_Grade: ^373.00 Oz Au, 1,119 Oz Ag, 181.6 Oz Pt, 149,200 Lb Cu
Year: 1915
Material type: ORE
Description: Ap_Grade: ^38.27 Oz Au, 409 Oz Ag, 36,986 Lb Cu, 720 Lb Pb
Year: 1920
Material type: ORE
Description: Ap_Grade: ^6.0 Oz Au, 45 Oz Ag, 13,278 Lb Cu
Year: 1919
Material type: ORE
Description: Ap_Grade: ^359.22 Oz Au, 858 Ag, 34.3 Oz Pt, 203.3 Oz Pd, 26,048 Lb Cu
Year: 1920
Time Period: 1914-1920
Material type: AU
Description: Cp_Grade: ^0.506 Oz/Ton Ave.
Year: 1920
Time Period: 1914-1920
Material type: CU
Description: Cp_Grade: ^162 Lb/Ton Ave.
Year: 1920
Time Period: 1914-1920
Material type: PD
Description: Cp_Grade: ^0.170 Oz/Ton Ave.
Year: 1920
Time Period: 1914-1920
Material type: PT
Description: Cp_Grade: ^0.087 Oz/Ton Ave.
Year: 1920
Time Period: 1914-1920
Material type: AG
Description: Cp_Grade: ^2.004 Oz/Ton Ave.

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Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1886
Year Last Production: 1937
Discovery Year: 1886
Years of Production:
Organization:
Significant: N
Deposit Size: S

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Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Sonoran Desert
Physiographic Detail: Spring Mountains

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Mineral Deposit Model

Model Name: Polymetallic replacement

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Orebody

Form: FISSURE-FAULT ORE SHOOT, ELLIPTICAL PIPE

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Structure

Type: R
Description: Keystone Thrust, Broad Anticlinal Arch

Type: L
Description: Ironside Fault; Minor Faults

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Alterations

Alteration Type: L
Alteration Text: Hydrothermal, Dolomitization And Recrystallization Of Country Rock; Quartz Monzonite Is Kaolinized. Strong Supergene Leaching

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Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

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Analytical Data

Analytical Data: 99.08 OZ/TON PT (3,400 PPM), 111 OZ/TON AU (3,800 PPM), 16 OZ/TON PD (550 PPM). PD:PT=5:1, PGE>AU
Analytical Data: PLUMBOJAROSITE ANALYSIS: AU=234 OZ/TON (8,000 PPM), PT=15 OZ/TON (510 PPM), PD=64 OZ/TON (2,200 PPM) (HEWETT, 1931, P. 117), MAX FOR PT WAS 230 OZ/TON (7,900 PPM). EARLY,1915, ASSAYS YIELDED 7.38 OZ/TON PT (250 PPM), 11.55 OZ/TON AU (400 PPM)

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Materials

Ore: Chalcocite
Ore: Bornite
Ore: Rutile
Ore: Brochantite
Ore: Malachite
Ore: Chrysocolla
Ore: Copper
Ore: Chalcopyrite
Ore: Gold
Ore: Libethenite
Ore: Cuprite
Gangue: Bismutite
Gangue: Quartz
Gangue: Hematite
Gangue: Pyrite

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Comments

Comment (Geology): SILL LIES 1500 FT NORTHEAST OF MINE. BLACK TO GREENISH TALCY MATERIAL CONTAINED THE RICHEST VALUES. ZONING OF DEPOSIT SHOWS PGE AT CORE. TI ORE BODY IS LOCATED ALONG MINOR FAULT SEPARATING BASE OF MONTE CRISTO FORMATION FROM VALENTINE MEMBER OF SULTAN LIMESTONE. SMALL AMOUNT OF RUTILE AND OCTAHEDRITE FOUND IN OREBODY BUT NOT IN WALL ROCKS.

Comment (Deposit): THIS RECORD HAS BVEEN REVISED TO INCLUDE INFORMATION FROM RECORD NUMBERS W001563 AND M045353, WHICH HAVE BEEN DELETED.

Comment (Commodity): ANOMALOUS RADIOACTIVITY NOTED IN LIMONITE LENSES SURROUNDED BY CHRYSOCOLLA HALOS. PLATINUM-GROUP METALS ARE FOUND IN PLUMBOJAROSITE. IT HAS BEEN SPECULATED THE SPERRYLITE IS PRESENT, BUT IT HAS NEVER BEEN OBSERVED. PIPELIKE MASSES OF CELLULAR QUARTZ IMPREGNATED WITH CHALCOPYRITE AND PYRITE CONTAINED AU, PT, PD. ADDITIONAL UNNAMED TI MINERALS ALSO REPORTED PRESENT

Comment (Location): UNSURVEYED. LOCATION GIVEN IS ON GROUP OF ADIT SYMBOLS SHOWN AS BOSS MINE ON TOPO MAP INFO FROM LAND.ST :(1972)

Comment (Production): PRODUCTION FROM 1936 CAME FROM NBMG OPEN-FILE DATA. GROSS TOTAL VALUE OF OUTPUT WAS $210,000. 3,500 TONS OF ORE SHIPPED 1916. 295 TONS PT-BEARING ORE PRODUCED 1917. 17 OZ PT FROM 443 TONS ORE (EQUAL TO 0.24 OZ/TON, 8.2 PPM) AND 400 OZ PD (EQUAL TO 0.9 OZ/TON, 31 PPM) IN 1918. 90 TONS PT-PD ORE PRODUCED 57 OZ PT AND PD.

Comment (Development): PGE DISCOVERED IN 1914 BY H.K. RIDDALL. PREVIOUS OWNER BOSS GOLD MINING CO.

Comment (Deposit): ALL THE ORE WAS RESTRICTED TO A SINGLE CONTINUOUS ORESHOOT ALONG NORTHWEST OR HANGING WALL SIDE OF NORTHEAST-TRENDING FAULT ZONE, EXPOSED ON THE 100 FT LEVEL AS ELLIPTICAL PIPES, 25 FT DIAMETER.

Comment (Workings): WORKINGS CONSISTED OF 3 ADITS (1915) AND NOW CONSISTS OF 5 ADITS WITH A 2-BUCKET, 1,000 FT LONG, AERIAL TRAM CONNECTING THE UPPER AND LOWER WORKINGS. MORE THAN 6,000 FT OF WORKINGS BY 1919

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References

Reference (Deposit): LIND, S.C., DAVIS, C.W., AND VON BERNEWITZ, M.W., 1923, PLATINUM ASSAYS AND PLATINUM PROMOTIONS: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 2496, P. 19.

Reference (Deposit): LECHLER, P.J., AND HSU, L.C., 1988, REVIEW OF PLATINUM-GROUP METAL DEPOSITS WITH NEW DATA FROM NEVADA, PREPRINT FOR AMERICAN INSTITUTE OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS MEETING, 1988, 7 P.

Reference (Deposit): BEAL, L.H., 1963, INVESTIGATION OF TITANIUM OCCURRENCES IN NEVADA: NEVADA BUREAU OF MINES REPORT 3, 42 P.

Reference (Production): HEWETT, 1931

Reference (Deposit): LONGWELL, C.R., PAMPEYAN, E.H., BOWYER, BEN, AND ROBERTS, R.J., 1965, GEOLOGY AND MINERAL DEPOSITS OF CLARK COUNTY, NEVADA: NEVADA BUREAU OF MINES BULLETIN 62, P. 111-112, 18.

Reference (Deposit): HEWETT, D.F., 1931, GEOLOGY AND ORE DEPOSITS OF GOODSPRINGS QUADRANGLE, NEVADA: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 162, P. 114-118.

Reference (Deposit): KNOPF, ADOLPH, 1915, A GOLD-PLATINUM-PALLADIUM LODE IN SOUTHERN NEVADA, IN CONTRIBUTIONS TO ECONOMIC GEOLOGY: U.S. GEOLOGICAL SURVEY BULLETIN 620, P. 1-12.

Reference (Deposit): MUDD, S.W., 1915, THE BOSS MINE, GOODSPRINGS, NEV.: MINING AND SCIENTIFIC PRESS, V. 110, P. 297-298.

Reference (Deposit): NEVADA BUREAU OF MINES AND GEOLOGY, CLOSED FILE DATA, ITEM #5883, P. 44-45.

Reference (Deposit): SMITH, 1983, FIELD EXAMINATION, NEVADA BUREAU OF MINES AND GEOLOGY, 10 FEB 83.

Reference (Deposit): CRAMPTON, F.A., 1916, PLATINUM AT THE BOSS MINE, GOODSPRINGS, NEV.: MINING AND SCIENTIFIC PRESS, V. 112, P. 479-482.

Reference (Deposit): KENNEDY, J.C., 1915, OCCURRENCE OF PLATINUM AT BOSS MINE, NEVADA: MINING AND ENGINEERING WORLD, V. 42, P. 939-940.

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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.