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Lofthouse Mine

Past Producer in Churchill county in Nevada, United States with commodities Antimony, Copper, Lead
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Geologic information

Identification information

Deposit ID 10045390
MRDS ID M233103
Record type Site
Current site name Lofthouse Mine
Alternate or previous names Dyer Canyon Prospect, Danielson Prospect

Geographic coordinates

Geographic coordinates: -117.79623, 39.72047 (WGS84)
Elevation 1798
Relative position 28 MILES N. OF EASTGATE
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Geographic areas

Country State County
United States Nevada Churchill

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 021N;022N 037E;037E 03 NE (03) OF SE (34) Nevada

Comments on the location information

  • IN DYER CANYON ABOUT 1.4 MILES FROM MOUTH; 5 MILES SOUTH OF BERNICE TO LOWER ADIT. ; INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Antimony Primary
Copper Tertiary
Lead Tertiary

Materials information

Materials Type of material
Cervantite Ore
Jamesonite Ore
Stibnite Ore
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Silicification; Sericitization

Mineral occurrence model information

Model code 180
USGS model code 27d
Deposit model name Simple Sb (veins, pods, etc)

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
    Rock unit name Star Peak Formation
    Rock description Star Peak Formation
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -117.79623, 39.72047
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Ore body information

  • General form PODS, VEINLETS, SINGLE CRYSTALS
    Strike N45E, N10E
    Dip 60 DEG TO 75 DEG SE; 45-50W.
  • General form PODS, VEINLETS, SINGLE CRYSTALS
    Strike N45E, N10E
    Dip 60 DEG TO 75 DEG SE; 45-50W.

Comments on the geologic information

  • ORE SHOOTS ARE BEST IN THE LIMESTONE

Economic information

Economic information about the deposit and operations

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

Mining district

District name Bernice District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Lofthouse, Ralph
    Home office Fallon
    Last year 1920

Production statistics

  • Year 1940
    Material ORE SB
    Accuracy Estimate
    Description Ap_Grade: ^30% Sb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Antimony Antimony 30wt-pct
  • Year 1948
    Material ORE SB
    Accuracy Estimate
    Description Ap_Grade: ^50% Sb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Antimony Antimony 50wt-pct

Comments on the production information

  • PRODUCTION HAS AMOUNTED TO 21 TONS OF ANTIMONY METAL: A SMALL AMOUNT WAS MINED DURING WWI, AND IN 1940 2 TONS ORE AVERAGING 30% ANTIMONY WERE PRODUCED. IN 1948, 40 TONS ORE AVG. 50% SB WERE SHIPPED TO LOS ANGELES.

Comments on the workings information

  • 2 100-FT. LONG ADITS AND SEVERAL TRENCHES

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M233103

Bibliographic references

  • Deposit

    WILLDEN, R., AND R.C., SPEED, 1974, GEOLOGY AND MINERAL DEPOSITS OF CHURCHILL COUNTY, NEV.; N.B.M.G. BULL. 83.

  • Deposit

    SCHRADER, F.C., 1947, CARSON SINK AREA; U.S.G.S. OPEN FILE REPORT.

  • Deposit

    LAWRENCE, E.F., 1963, ANTIMONY DEPOSITS OF NEVADA; NBMG BULL. 61

  • Production

    WILLDEN, R., AND R.C. SPEED (1974) NBMG BULL. 83, P. 62; LAWRENCE (1963) NBMG BULL 61, P. 28

General comments

Subject category Comment text
Deposit QUARTZ VEINS ARE 2 TO 30 INCHES WIDE AND HAVE SOME CALCITE. STIBNITE OCCURS AS PODS, VEINLETS AND SINGLE CRYSTALS IN VEINS
Deposit THIS RECORD IS AN UPDATED VERSION WHICH INCLUDES INFORMATION FROM D002151 ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1976 Miller, M.H. Nevada Bureau of Mines and Geology
Updater 01-JUN-1981 La Pointe, D.D. U.S. Geological Survey
Updater 01-JUN-1991 Moyer, Lorre A. (Marcus, S.M.) U.S. Geological Survey