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Nevada Humboldt Group

Past Producer in Pershing county in Nevada, United States with commodities Gold, Silver, Lead, Zinc
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10044124
MRDS ID M231465
Record type Site
Current site name Nevada Humboldt Group
Alternate or previous names NBMG Sample Sites 2506, 2510, 2511
Related records 10174871

Geographic coordinates

Geographic coordinates: -118.20654, 40.57239 (WGS84)
Relative position IN HUMBOLDT CANYON

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Star Peak(quadrangle 1:24,000 scale)

Eugene Mountains(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)

Geographic areas

Country State County
United States Nevada Pershing

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 031N 034E 06,07 Nevada

Comments on the location information

  • ACCESSIBLE VIA JEEP TRAIL IN HUMBOLDT CANYON. CLAIMS OCCUR ON BOTH SIDES OF THE CANYON. UTM FOR SAMPLES ARE AS FO-LLOWS: 2506- N4491625, E397975; 2510-N4492850, E398925; 2511-N-4491975; E398000.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Sphalerite Ore
Calcite Gangue
Quartz Gangue

Analytical data

Result SAMPLE 2506, COMPOSITE GRAB SAMPLE OF SHAFT AND ADIT DUMP MATERIAL (SILICIFIED KOIPATO RHYOLITE WITH STOCKWORK QUA-RTZ VEINLETS AND PYRITE) CONTAINS 20 % FE, 0.3 % MG, 1 % CA, 0-.02 % TI, 100 PPM MN, 15 PPM AG, 200 PPM AS, 0.05 PPM AU (AA A-NALYSIS), 700 PPM B, 100 PPM BA, 5 PPM BE, 50 PPM CU, 10 PPM M-0, 5 PPM NI, 2000 PPM PB, 150 PPM SB, 30 PPM Y, 1000 PPM ZN, 2-00 PPM ZR.
Result SAMPLE 2510, DUMP GRAB OF KOIPATO RHYOLITE PORPHYRY- WITH SULFIDE-BEARING VEIN MATERIAL CONTAINS 1 % FE, 0.1 % MG,- 0.2 % CA, 0.015 % TI, 50 PPM MN, 150 PPM AG, 100 PPM B, 50 PP-M BA, 1000 PPM BE, 10 PPM CR, 50 PPM CU, 5 PPM NI, 3000 PPM PB- 50 PPM W, 7000 PPM ZN, 50 PPM ZR.
Result SAMPLE 2511, DUMP GRAB, PYR-ITIZED, SILICIFIED, QUARTZ VEINS IN RHYOLITE, JASPEROID PRIDA -CONTAINS 0.2% FE, 0.05 % MG, 0.05% CA, 0.015 % TI, 10 PPM MN, -100 PPM AG, 200 PPM B, 70 PPM BA, 1 PPM BE, 200 PPM BI, 10 PPM-CR, 100 PPM CU, 10 PPM MO, 5 PPM NI, 3000 PPM PB, 30 PPM ZR.
Result S-AMPLE 2511 U, CHIP OUTCROP FROM SAME LOCALITY, CONTAINS 1 % FE-, 0.5 % MG, 0.2 % CA, 0.15 % TI, 50 PPM MN, 1.5 PPM AG, 500 PP-M B, 1000 PPM BA, 1.5 PPM BE, 50 PPM CR, 50 PPM CU, 50 PPM MO,- 15 PPM NI, 30 PPM PB, 5 PPM SC, 1500 PPM V, 10 PPM Y, 200 PPM- ZN, 100 PPM ZR

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Rochester Rhyolite (Koipato Group)
    Rock description Rochester Rhyolite (Koipato Group)
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Prida (Star Peak Group)
    Rock description Prida (Star Peak Group)

Nearby scientific data

(1) -118.20654, 40.57239
ListMap

Economic information

Ore body information

  • Width 0.61M

Comments on the geologic information

  • VEINS IN THE FLORIDA CANYON AREA ARE UP TO 24 INCHES WIDE AND CONTAIN SOME SULFIDES. BOTH THE SEDIMENTARY ROCKS OF THE STAR PEAK FORMATION AND THE RHYOLITE OF KOLPATO FORMATION ARE CUT BY QUARTZ-CALCITE VEINS CONTAINING FREE GOLD, PYRITE, GALENA & SPHALERITE. QUARTZ ALSO OCCURS AS PODS AND "BLOWOUTS" IN FLORIDA CANYON ON THE NEVADA NO. 2 CLAIM. SOME OF THE QUARTZ VEINS IN THE NEVHUM AND HUMBOLDT CLAIMS CONTAIN NEEDLES OF TOURMALINE. A VEIN SOUTH IN ADIT NO. 1 CONTAINS QUARTZ, CALCITE, AND FLOURITE WITH SPORADIC FREE GOLD; OCCURING NEAR THE CONTACT WITH THE RHYOLITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Imlay District; Humboldt District

Land status

Ownership category Private

Comments on the workings information

  • THE PROPERTY IS EXPLORED BY 9 SHORT ADITS DRIVEN ON OR TO INTERSECT QUARTZ VEINS. OTHER ADITS AND ONE SHAFT ARE DRIVEN ON SIMILAR QUARTZ VEINS.SOME WORKINGS CAVED IN 1984.

Comments on development

  • NO EVIDENCE OF VALID CLAIMS IN 1984. OLD PROPERTY DATING TO 186075. JEEP TRAIL PUT IN, 1950'S-1960'S. OLD STONE BU-ILDING.

Reference information

Bibliographic references

  • Deposit

    LAWRENCE, E. F., 1965, NEVADA HUMBOLDT GROUP, PERSHING COUNTY, NEVADA; UNPUBLISHED REPORT.

  • Deposit

    BONHAM, H. F., JR., 3 AUG 85, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

  • Deposit

    NBMG OFR 85-3, 1985

  • Deposit

    USGS, 1967, MAP GO-666

General comments

Subject category Comment text
Deposit 18 PATENTED MINING CLAIMS THAT LIE ALONG THE CONTACT BETWEEN THE STAR PEAK AND KOIPATO FORMATIONS. QUARTZ VEINS IN THE LIMESTONE AND SHALE OF THE STAR PEAK FORMATION.,(PRIDA FM). ON SOUTH SIDE OF HUMBOLDT CANYON, A QUARTZ VEIN 3 M WIDE TRENDS N-S, VERTICAL +/- 5 DEGREES WALLROCK -IS SILICIFIED KOIPATO GROUP (ROCHESTER RHYOLITE). QUARTZ VEIN -CONTAINS PYRITE, AS DOES WALLROCK ADJACENT TO VEIN. VEIN IS WI-THIN 50 M OF CONTACT WITH LOWER THIN-BEDDED MEMBER OF PRIDA FM-. AT SAMPLE SITES 2510 AND 2511, THERE ARE QUARTZ VEINS AND ST-RINGERS IN PORPHYRITIC RHYOLITE OF KOIPATO GROUP. RHYOLITE IS -SILIFIED AND PYRITIZED. GLASSY VEIN QUARTZ, SOME PYRITE, MINOR-GALENA. TOURMALINE AND MUSCOVITE ALSO OCCUR IN QUARTZ. POSSIBL-Y SOME SCHEELITE PRESENT. JASPERIOD PRESENT IN PRIDA FM NEAR C-ONTACT WITH KOIPATO. BRECCIATED AND STOCKWORKED DARK GREY TO B-LACK CARBONACEOUS LIMESTONE WITH SOME FE OXIDE STAINING.
Deposit THE NEVADA HUMBOLDT GROUP CONSISTS OF 18 PATENTED MINING CLAIMS THAT LIE ALONG THE CONTACT BETWEEN THE STAR PEAK AND KOIPATO FORMATIONS. THE PROPERTY IS EXPLORED BY 9 SHORT ADITS DRIVEN ON OR TO INTERSECT QUARTZ VEINS IN THE LIMESTONE & SHALE OF THE STAR PEAK FM. OTHER ADITS AND ONE SHAFT ARE DRIVEN ON SIMILAR QUARTZ VEINS IN THE RHYOLITE OF KOIPATO FM. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1980 Royse, Sue E. Nevada Bureau of Mines and Geology
Updater 01-OCT-1985 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology

Beyond USGS

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

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.