1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Mary Clough Mine

Past Producer in Humboldt county in Nevada, United States with commodities Gold, Silver, Tungsten
Map
XML
JSON
KML
B
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. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10008803
MRDS ID D001207
Record type Site
Current site name Mary Clough Mine
Alternate or previous names Charlestown Hill National Mines, NBMG Sample Site 2384, Magnussen Property
Related records 10271204

Geographic coordinates

Geographic coordinates: -117.6843, 41.36656 (WGS84)
Elevation 2210

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Paradise Well(quadrangle 1:24,000 scale)

Osgood Mountains(quadrangle 1:100,000 scale)

McDermitt(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Quinn(hydrologic unit)

Black Rock Desert(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 040N 038E 03 Nevada

Comments on the location information

  • 7 MI. N.E. OF PARADISE STATION

Commodities

Commodity Importance
Gold Primary
Silver Primary
Tungsten Critical Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Scheelite Ore
Silver Ore
Pyrite Unknown

Analytical data

Result SAMPLE 2384 OF QUARTZ VEIN MATERIAL CONTAINS 3 % FE, 0.2 % MG, 0.3 % CA, 0.15 % TI, 300 PPM MN, 10 PPM AG, 200 PPM AS, 100 PPM B, 500 PPM BA, 2 PPM BE, 50 PPM BI, 300 PPM CD, 5 PPM CO, 50 PPM CR, 30 PPM CU, 20 PPM LA, 30 PPM NI, 1500 PPM PB, 5 PPM SC, 70 PPM V, 100 PPM W, 20 PPM Y, 1500 PPM ZN, AND 7 PPM ZR.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Winnemucca Formation;Winnemucca Formation;Winnemucca Formation;O'Neill Formation;O'Neill Formation;O'Neill Formation
    Rock description Winnemucca Formation;Winnemucca Formation;Winnemucca Formation;O'Neill Formation;O'Neill Formation;O'Neill Formation

Nearby scientific data

(1) -117.6843, 41.36656
ListMap

Economic information

Ore body information

  • General form VEIN, IRREGULAR
    Strike N-S
    Dip 50E
    Thickness 0.61M

Controls for ore emplacement

  • Seam Intersections Near Igneous Contact

Comments on the geologic information

  • GEOL.COM: PYRITE AND OTHER SULFIDES ARE DISSEMINATED THROUGH THE SEDIMENTS, HIGHEST GRADE SCHEELITE AT SEAM INTERSECTIONS VEIN WIDTH IS 2 FEET. GANGUE IS HARD, WHITE QUARTZ WITH DISSEMINANTED CHALCOPYRITE, AND SMALL VALUES IN GOLD AND SILVER. GEOL.COM: PYRITE AND OTHER SULFIDES ARE DISSEMINATED THROUGH THE SEDIMENTS, HIGHEST GRADE SCHEELITE AT SEAM INTERSECTIONS VEIN WIDTH IS 2 FEET. GANGUE IS HARD, WHITE QUARTZ WITH DISSEMINANTED CHALCOPYRITE, AND SMALL VALUES IN GOLD AND SILVER. HORNFELS, SHALE, SCHIST OF WINNEMUCCA AND O'NEILL FORMATIONS STRIKING N30E, DIP MODERATE TO NW..

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1916
Year of first production 1915

Mining district

District name Shon District; Paradise Valley District; Mount Rose District; Charleston Hill District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Charlestown Hill National Mines, Inc.
    First year 1916

Production statistics

  • Year 1955
    Period 1955
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Wo3 Ore Tungsten Tungsten 0wt-pct

Comments on the production information

  • SMALL AMOUNTS OF AU-AG PRODUCTION IN EARLY YEARS.

Workings at the site

  • Type of workings Surface/Underground
    Length 609.6M

Comments on the workings information

  • FIVE TUNNELS OR ADITS AND MUCH TRENCHING AND PROSPECTING. PARTS OF MILL WERE STILL STANDING IN 1985.

Comments on development

  • PROPERTY WAS LOCATED IN 1919 BY MR. AND MRS. CLOUGH. A CAMP AND MILL WERE BUILT AND A 1200-FT ADIT WAS DRIVEN TO EXPLORE FOR GOLD AND SILVER. TUNGSTEN MINERALIZATION WAS DISCOVERED IN 1943, BUT NO PRODUCTION WAS RECORDED UNTIL 1955 WHEN THE RED ROSE MINING AND MILLING CO. SHIPPED 7 TONS OF ORE THAT YIELDED 2 UNITS WO3. NO ACTIVITY AT TIME OF EXAMINATION IN 1985.

Reference information

Bibliographic references

  • Deposit

    WILLDEN, R., 1964, GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT COUNTY, NEVADA: NBMG, BULL. 59.

  • Deposit

    VANDERBURG, W.O., 1938, RECONNAISSANCE OF MINING DISTRICTS IN HUMBOLDT COUNTY, NEVADA: USBM INF. CIRC. 6995.

  • Deposit

    STAGER, JACK, 11 JUNE 85, NBMG FIELD EXAMINATION REPORT AND SAMPLE ANALYSIS.

  • Deposit

    TINGLEY, J.V., 1972, UNPUBLISHED REPORT ON THE MARY CLAUGH MINE.

  • Production

    STAGER, H.K., (IN PREP.)

General comments

Subject category Comment text
Deposit HORNFELS, SHALE, AND SCHIST ARE CUT BY A LARGE STEPPLY-DIPPING GRANODIORITE DIKE 250 FT WIDE AND A SMALLER APLITE DIKE. ALL ROCK TYPES ARE CUT BY QUARTZ VEINS AND VEINLETS UP TO 2 FT WIDE. LARGER VEINS CONTAIN GOLD, SILVER, CHALCOPYRITE, AND PYRITE, BUT NO SCHEELITE. THE SCHEELITE OCCURS IN NARROW VEINLETS LESS THAN AN INCH WIDE. SOME VEINLETS 0.25-0.5 INCH WIDE ARE NEARLY HALF SCHEELITE, AND HIGHEST GRADE IS AT VEIN INTERSECTIONS. IN ONE PLACE 350 FT FROM THE PORTAL OF THE ADIT, SEVERAL VEINLETS INTERSECT TO GIVE A GRADE OF ABOUT 1 % WO3 OVER A 2 FT WIDTH. AVEREAGE GRADE OF THE 7 TONS OF ORE MINED IN 1955 WAS LESS THAN 0.4 % WO3.
Deposit THE CHARLESTOWN HILL NATIONAL MINES INC CONSISTED OF A GROUP OF 11 CLAIMS OWNED BY THIS MONTANA CORPORATION FORMED IN 1916. A SMALL PRODUCTION WAS MADE BY LESSEES IN ITS EARLY YEARS. THE PROPERTY WAS INACTIVE FROM 1929 UNTIL VANDERBURG'S REPORT IN 1938. DEVELOPMENT THEN CONSISTED OF SEVERAL ADITS AND OTHER WORKINGS TOTALLING ABOUT 2000 FEET ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1974 Elliott, James E. Nevada Bureau of Mines and Geology
Updater 01-MAY-1987 La Pointe, D.D. Nevada Bureau of Mines and Geology PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 09-JUN-1995 Mosier, Dan 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.