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Railroad Pass Deposit

Past Producer in Clark county in Nevada, United States with commodities Gold, Aluminum, Silver, Copper, Potassium
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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. 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. Reserves and resources
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10009262
MRDS ID D002133
Record type Site
Current site name Railroad Pass Deposit

Geographic coordinates

Geographic coordinates: -114.90916, 35.97111 (WGS84)
Elevation 732
Relative position 5 MI. W OF BOULDER CITY

Site location context

Political divisions (FIPS codes)

Clark(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Boulder City NW(quadrangle 1:24,000 scale)

Boulder City(quadrangle 1:100,000 scale)

Kingman(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Ivanpah-Pahrump Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 023S 063E 01,02,11,12 Nevada

Comments on the location information

  • NEAR JUNCTION OF US HIGHWAYS 93 AND 95 BETWEEN LAS VEGAS AND BOULDER CITY.

Commodities

Commodity Importance
Gold Primary
Aluminum Critical Tertiary
Silver Tertiary
Copper Tertiary
Potassium Tertiary

Comments on the commodity information

  • PROJECT 9350 - 01393 ALUNITE RESOURCES

Materials information

Materials Type of material
Alunite Ore
Copper Ore
Gold Ore
Kaolinite Ore
Silver Ore
Gypsum Gangue
Quartz Gangue

Alteration

  • (Local) Alunitization, Silicification

Analytical data

Result 2 ANALYSES SHOW 16.6 % AND 65.2 % ALUNITE

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -114.90916, 35.97111
ListMap

Economic information

Ore body information

  • General form IRREGULAR, GENERALLY LENTICULAR PLAN
    Thickness 27.43M
    Length 1219.2M
    Width 243.84M

Comments on the geologic information

  • ALUNITIZATION IRREGULAR IN DISCRETE LOCALIZED AREAS OF SMALL DIMENSIONS

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Large
Significant No
Discovery year 1908
Discoverer R. T. Hill

Mining district

District name Camp Alunite/Las Vegas District

Land status

Ownership category Private

Comments on the production information

  • NO ALUNITE PROD; EARLY WORKS PROSPECTING FOR GOLD ORE . GARDNER'S ( 1943 ) UNPUB. REPORT MENTIONS THERE WERE SOME SHIPMENTS OF GOLD BUT THE AMOUNT IS UNKNOWN.

Reserves and resources

  • Type In-situ
    Estimate year 1943
    Commodity Subtype Grade units Group Importance Year
    Gold Au 30 g/mt Gold Major 1943
  • Type In-situ
    Estimate year 1943
    Indicated 12000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 30 g/mt Gold Major 1943
  • Type In-situ
    Estimate year 1943
    Inferred 57000mt ore
    Commodity Subtype Grade units Group Importance Year
    Aluminum Al 27 wt-pct Aluminum Trace 1943

Comments on the reserve resource information

  • POTENTIAL RESOURCE ESTIM. BY R. B. HALL BASED ON 1974 RECON PLUS PUB AND UNPUB DATA, THIS DEPOSIT NOT CONSIDERED VIABLE ALUNITE RESOURCE

Comments on the workings information

  • ONE 200 FT. SHAFT, A 40 FT. ADIT, A SHALLOW SHAFT, AND MANY OPEN CUTS AND PITS.

Comments on development

  • SEVERAL PROSPECT SHAFTS PITS SUNK IN SEARCH FOR GOLD ORE NOT ALUNITE. NO ALUNITE PRODUCED

Reference information

Bibliographic references

  • Analytical Data

    SRC.REF: THOENEN, J. R., 1941 , USBM R. I. 3561 , P. 15

  • Deposit

    CALLAGHAN, E., 1936 , IN HEWETT, D. F., AND OTHERS, MINERAL RESOURCES OF THE REGION AROUND BOULDER DAM: USGS BULL. 871 , P. 144 - 145 .

  • Deposit

    GALE, H. S., 1917 , IN PHALEN, W. C., POTASH SALTS: MINERAL RESOURCES OF THE US, 1915 , PART II - NONMETALS, P. 111 - 113 .

  • Deposit

    GARDNER, L. S., 1943 , UNPUB. REPT. IN USGS FILES

  • Deposit

    HILL, R. T., 1908 , THE GOLDFIELD TYPE OF ORE OCCURENCE: ENG. MINING JOUR., V. 86 , P. 1096 - 1099 .

  • Deposit

    5) HILL, R. T., 1908 , A SCIENTIFIC SEARCH FOR A NEW GOLDFIELD: ENG. MINING JOUR., V. 86 , P. 1157 - 1160 .

  • Deposit

    6) HILL, R. T., 1908 , CAMP ALUNITE, A NEW NEVADA GOLD DISTRICT: ENG. MINING JOUR., V. 86 , P. 1203 - 1206 .

  • Deposit

    7) THOENEN, J. R., 1941 , ALUNITE RESOURCES OF THE UNITED STATES: USBM REPT. INV. 3561 , P. 15 .

  • Deposit

    1908 DIREXPL R.T. HILL: MINE WORKS

  • Deposit

    1915 RECON H.S. GALE: NOTES

  • Deposit

    1942 GEOLMAP L.S. GARDNER: UNPUB REPT

General comments

Subject category Comment text
Deposit SOME ALUNITE DISSEMINATED THROUGH ALTERED ROCK, BUT MOST CONSPICUOUS PART OCCURS AS SMALL IRREGULAR VEINLETS. DEPOSIT IS READILY ACCESSIBLE AND THERE IS VERY LITTLE OVERBURDEN. SIZE/DIRECTIONAL DATA IS FOR ALUNITE DEPOSIT ONLY.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1975 Hall, Robert B. U.S. Geological Survey
Updater 01-AUG-1978 Starritt, Bruce 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.