Ninety-Nine Mine

Past Producer in Clark county in Nevada, United States with commodities Copper, Lead, Silver, Gold, Vanadium

Geologic information

Identification information

Deposit ID 10008113
MRDS ID D000026
Record type Site
Current site name Ninety-Nine Mine
Related records 10149204

Geographic coordinates

Geographic coordinates: -115.46584, 35.95193 (WGS84)
Elevation 1707
Relative position 8 MILES NORTH OF GOODSPRINGS
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Geographic areas

Country State County
United States Nevada Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
023S 058E 5 Nevada

Commodities

Commodity Importance
Copper Primary
Lead Primary
Silver Secondary
Gold Secondary
Vanadium Tertiary

Materials information

Materials Type of material
Chalcocite Ore
Chrysocolla Ore
Cuprite Ore
Cuprodescloizite Ore
Malachite Ore

Analytical data

Result 8 % VANICOXIDE FROM 10 FT. PIT 1000 FT. EAST OF NINETY-NINE SHAFT

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Stratigraphic age (youngest) Mississippian

Nearby scientific data

(1) -115.46584, 35.95193

Geologic structures

Type Description Terms
Regional Large Scale Overthrusting
Local Extensive Ninety-Nine Fault Is Ne Of The Shaft

Controls for ore emplacement

  • Fault Zone

Comments on the geologic information

  • ORE BODIES WERE LENSES OF FERRUGINOUS CHERT W/ASSOCIATED MALACHITE AND CHRYSOCOLLA WITHIN THE DOLOMITE BRECCIA.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Goodsprings

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Ninety-Nine Mining Co.

Production statistics

  • Year 1946
    Period 1903 - 1946
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 20wt-pct

Workings at the site

  • Type of workings Underground
    Length 85.34M
    Overall depth 121.92M

Comments on the workings information

  • MINING SHAFT HAS FOUR LEVELS

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS D000026

Bibliographic references

  • Deposit

    HEWETT, 1931 , GEOLOGY AND ORE DEPOSITS OF GOODSPRINGS QUAD., USGS PROF. PAPER 162 , P. 108 - 109 .

  • Deposit

    LONGWELL, C. R., PAMPEYAN, E. H., BOWYER, B., ROBERTS, R. J., 1965 , GEOLOGY AND MINERAL DEPOSITS OF CLARK CO. NEV. BUR. OF MINES, BULL. 62 , P. 186 .

  • Production

    LONGWELL, PAMPEYAN, BOWYER, ROBERTS, 1965

General comments

Subject category Comment text
Deposit OPERATION STOPPED IN 1946 , MOST OF REMAINING CHALCOCITE IS ALTERED TO CUPRITE AND MALACHITE ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 03-AUG-1973 Fischer, Richard P. U.S. Geological Survey
Updater 01-MAR-1979 Harner, Joy L. (Roberts, Ralph J.) U.S. Geological Survey