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NBMG Sample Site 2611

Past Producer in Humboldt county in Nevada, United States with commodities Tungsten, Silver, Molybdenum
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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. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Ownership information
  19. Production statistics
  20. Reserves and resources
  21. Workings at the site
  22. Links to other databases
  23. Bibliographic references
  24. General comments
  25. Reporter information

Geologic information

Identification information

Deposit ID 10104002
MRDS ID M232751
Record type Site
Current site name NBMG Sample Site 2611

Geographic coordinates

Geographic coordinates: -117.25568, 41.19433 (WGS84)
Elevation 1737
Relative position 40 MILES NE OF WINNEMUCCA

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Adam Peak(quadrangle 1:24,000 scale)

Osgood Mountains(quadrangle 1:100,000 scale)

McDermitt(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle 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 Humboldt

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 038N 042E 04 Nevada

Comments on the location information

  • S 1/2 OF S 1/2 SEC. 4; S. OF HANSEN CANYON.

Commodities

Commodity Importance
Tungsten Critical Primary
Silver Secondary
Molybdenum Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Pyrrhotite Ore
Scheelite Ore
Sphalerite Ore
Garnet Gangue
Pyroxene Gangue
Wollastonite Gangue

Alteration

  • (Local) Silicification, Bleaching

Analytical data

Result SAMPLE 2611, A DUMP SAMPLE OF GARNET-EPIDOTE-DIOPSIDE-QUARTZ SKARN WITH TRACE SCHEELITE, MOLYBDENITE, CHALCOPYRITE-, PYRITE, CONTAINS 20 % FE, 1 % MG, 20 % CA, 0.1 % TI, +5000 P-PM MN, 30 PPM AG, 100 PPM B, 2 PPM BE, 70 PPM BI, 50 PPM CO, 1-000 PPM CU, 300 PPM MO, 10 PPM NI, 1000 PPM PB, 30 PPM SN, 500- PPM V, 300 PPM W, 30 PPM Y, 500 PPM ZN, 15 PPM ZR.

Mineral occurrence model information

Model code 42
USGS model code 14a
Deposit model name W skarn

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Osgood Mtns Stock
    Rock description Osgood Mtns Stock
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Preble Formation;Preble Formation;Riley Limestone
    Rock description Preble Formation;Preble Formation;Riley Limestone

Nearby scientific data

(1) -117.25568, 41.19433
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Reg.Struct: Getchell Fault System
Type of structure Local
Structure description Fault Along Range-Front; Ne-Trending Offset Fault

Ore body information

  • General form TABULAR, ALONG IGNEOUS CONTACT
    Strike NNW
    Dip 30-55E
    Thickness 3.05M
    Length 487.68M
    Width 243.84M

Controls for ore emplacement

  • 3 Tactite Zones Near Granodiorite Contact Pre-Stock, Ne-Trending Structure May Have Influenced Emplacement And Guided Mineralizing Fluids Of Reactive Limestones

Comments on the geologic information

  • 3 TACTITE ZONES; THE EAST VEIN "EXTENDS ALONG THE GRANODIORITE CONTACT FOR ABOUT 1600 FT, MINED ON BOTH RILEY AND RILEY EXTENSION PROPERTIES. THE MAIN OREBODY WAS A TABULAR MASS OF TACTITE MINED FOR APPROX. 800 FT. DOWN DIP, AVERAGING 10 FT. THICK. PREBLE FORMATION LIMESTONE LENSES IN HORNFELS; MOST IMPORTANT IS THE 200-FT THICK RILEY LIMESTONE, THIN-BEDDED, WITH SHALEY PARTINGS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1917
Year of first production 1951

Mining district

District name Potosi District; Getchell District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Operator
    Owner Getchell Mine. Inc.
  • Type Owner
    Owner Frm Corp
    First year 1984

Production statistics

  • Year 1957
    Period 1951-1957
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^Ave. 0.37, Wo3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    WO3 Ore Tungsten Tungsten 0wt-pct

Comments on the production information

  • 229,000 TONS ORE AVG. 0.37% WO3, PLUS UNMINED RESERVES OF APPROX. 41,700 TONS OF 0.4, WO3 ORE BETWEEN 400 AND 800 LEVELS.

Reserves and resources

  • Type In-situ
    Estimate year 1961
    Total resources 18000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 0.4 wt-pct Tungsten Major 1961

Comments on the reserve resource information

  • BETWEEN THE 400 AND 800 LEVELS OF THE MINE.

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 243.84M

Comments on the workings information

  • VERTICAL SHAFT 400 FT DEEP, INCLINED WINZE FROM 400 TO 800 LEVEL, OPEN PIT, REMAINS OF STEEL HEADFRAME. SHAFT FLOO-DED TO ABOUT 200 FT LEVEL, (1984).

Comments on development

  • RECENT WORK DEFINES 186,000 TONS ORE IN THIS AREA

Reference information

Bibliographic references

  • Deposit

    WILLDEN,R., 1964, GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT CO., NEV: NEV. BUREAU OF MINES BULL. 59.

  • Deposit

    HOTZ, P.E. AND WILLDEN, R., 1964, GEOLOGY AND MINERAL DEPOSITS OF THE OSGOOD MOUNTAINS QUAD. HUMBOLDT CO., NEV: U.S.G.S. PROF. PAPER 431.

  • Deposit

    TINGLEY, J.V., 1978, UNPUBLISHED REPORT ON THE GETCHELL TUNGSTEN PROJECT, ON FILE AT THE NEV. BUREAU OF MINES

  • Deposit

    STAGER, H. K., IN PREPARATION, NBMG BULLETIN ON TUNGSTEN DEPOSITS OF NEVADA.

  • Deposit

    TINGLEY, J. V., NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS, 6 SEP 84.

  • Deposit

    SCHILLING, JOHN, 1979, NBMG OFR 79-3, MOLYBDENUM RESOURCES OF NEVADA.

  • Production

    HOTZ, P.E. AND WILLDEN, R., 1964

  • Reserve-Resource

    STAGER, IN PREP

General comments

Subject category Comment text
Deposit LARGEST OF THE 3 TACTITE ORE ZONES IS THE EASTERN ONE, A CONTINUATION OF THE RILEY TACTITE. THE MIDDLE AND WESTERN- ZONES ARE THINNER TACTITE BANDS FORMED IN LIMESTONE UNITS WHI-CH LIE DOWN-SECTION (WEST) OF THE RILEY LIMESTONE. THE MIDDLE -OREBODY WAS DISCOVERED UNDERGROUND AND DOES NOT CROP OUT AT TH-E SURFACE. THE WESTERN OREBODY WAS MINED FROM THE SURFACE. THE- LIMESTONES DIP 40-50E AND THE GRANODIORITE CONTACT IS GENERAL-LY CONFORMABLE TO THE STRIKE AND DIP OF THE SEDIMENTS. PRE-INT-RUSIVE FOLDING OF THE LIMESTONE INTO GENTLE, ASYMMETRICAL FOLD-S HAS RESULTED IN A "SCALLOPED" CONTACT CONFIGURATION, AND THE- RICHEST ORE HAS FORMED WHERE SYNCLINAL TROUGHS INTERSECT THE -CONTACT FORMING EMBAYMENTS SHAPED LIKE CONE SEGMENTS. TO THE E-AST, DOWN DIP, THE CONTACT STEEPENS AND PASSES INTO HORNFELS W-HICH LIES BELOW THE LIMESTONE, LIMITING THE EXTENT OF THE TACT-ITE TO THE EAST.
Deposit ONE OF THE EARLIEST TUNGSTEN PROPERTIES DEVELOPED IN THE AREA WAS RILEY. GETCHELL MINE INC.'S UNDERGROUND MINING, HERE AT RILEY EXTENSION BEGAN IN 1951; OPEN PIT ON WEST OREBODY LATER. 3 TACTITE BODIES. THE EASTERN MOST OF WHICH IS THE NORTHWARD CONTINUATION OF THE RILEY MINE OREBODY. RILEY AND RILEY EXTENSION MINES COMPRISE THE LARGEST SINGLE TACTITE DEPOSIT IN THE DISTRICT. RECENT EXPLORATION (GEOLOGIC MAPPING AND DRILLING) DEFINES AREAS CONTAINING APPROXIMATELY 186,000 TONS OF TUNGSTEN ORE IN THE RILEY EXTENSION AREA. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1981 La Pointe, D.D. Nevada Bureau of Mines and Geology
Updater 01-MAR-1986 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.

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.