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  3. Mineral Resource Data System (MRDS)

Mazuma Mine

Past Producer in Pershing county in Nevada, United States with commodities Gold, Silver
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10044909
MRDS ID M232541
Record type Site
Current site name Mazuma Mine
Alternate or previous names NBMG Sample Site 2830

Geographic coordinates

Geographic coordinates: -118.48765, 40.32017 (WGS84)
Elevation 1463

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Arabia(quadrangle 1:24,000 scale)

Lovelock(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Humboldt(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

Bureau of Land Management NV BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Pershing

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 028N 031E 03 Nevada

Comments on the location information

  • IN TRINITY CANYON. ACCESSIBLE VIA POOR ROAD ALONG ACTIVE STREAM COURSE. . INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Gold Ore
Silver Ore
Quartz Gangue

Alteration

  • (Local) Silicification Of Granodiorite

Analytical data

Result SAMPLE 2830 CONTAINS 3 % FE, 1 % MG, 2 % CA, 0.2 % TI, 300 PPM MN, 30 PPM AG, 500 PPM AS, 1000 PPM B, 200 PPM BA, 1.5 PPM BE, 20 PPM CR, 50 PPM CU, 7 PPM MO, 10 PPM NI, 50 PPM PB, 7 PPM SC, 150 PPM SR, 150 PPM V, 10 PPM Y, 150 PPM ZR, AND 0.4 PPM AU, BY AA ANALYSIS.

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Hornfels
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -118.48765, 40.32017
ListMap

Economic information

Ore body information

  • General form PINCH-AND-SWELL, PODS
    Strike N75E
    Dip 65S
    Thickness 3.05M
    Length 3.05M
    Width 1.22M

Controls for ore emplacement

  • Shear Zones And Ong Hornfelsic Dikes

Comments on the geologic information

  • SHEAR ZONE MINERALIZATION IS CHARACTERIZED BY A PINCH-AND-SWELL TYPE OF STRUCTURE THAT DEFINE PODS OF SHEARED AND BRECCIATED STRONGLY ALTERED GRANODIORITE, 2 TO 4 FEET WIDE AND ABOUT 10 FEET IN DIAMETER.

Economic information about the deposit and operations

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

Mining district

District name Trinity District

Land status

Ownership category BLM Administrative Area

Comments on the production information

  • UNKNOWN AMOUNT

Comments on the workings information

  • 2 ADITS ABOVE THE HAPPY JACK SPRING IN TRINITY CANYON.

Comments on development

  • AREA WORKED BETWEEN 1859 AND 1915. NO ACTIVITY AT TIME OF EXAMINATION IN 1984.

Reference information

Bibliographic references

  • Deposit

    JOHNSON, M. G., 1977, GEOLOGY AND MINERAL DEPOSITS OF PERSHING COUNTY, NEVADA; NBMG BULLETIN 89.

  • Deposit

    QUADE, JACK, 8 SEP 84, NBMG OFR 85-3.

General comments

Subject category Comment text
Deposit LOCATED ALONG SOUTHEASTERN MARGIN OF A LARGE GRANODIORITE STOCK ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV
Deposit WORKINGS ALONG A SHEAR TRENDING N40-50E AND DIPPING 50-70NW. IRON OXIDE ALTERATION, SOME BRECCIATION. MINERALIZATION IS IN WISPY STREAKS IN THE QUARTZ AND EXTENDS INTO THE GRANODIORITE. ANDESITE OR MAFIC DIKES OCCUR NEARBY, EAST OF THE MAIN WORKINGS. SAMPLE 2830 IS OF BRECCIA AND QUARTZ VEIN MATERIAL WITH SULFIDES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1981 Royse, Sue E. Nevada Bureau of Mines and Geology
Updater 01-MAR-1987 La Pointe, D.D. Nevada Bureau of Mines and Geology
Updater 01-SEP-1994 Li, Zhiping (Peters, S.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site

Authoritative Nevada resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.