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Cahill Mine

Past Producer in Humboldt county in Nevada, United States with commodities Mercury, Antimony
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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. Workings at the site
  21. Links to other databases
  22. Bibliographic references
  23. General comments
  24. Reporter information

Geologic information

Identification information

Deposit ID 10040304
MRDS ID M055016
Record type Site
Current site name Cahill Mine
Alternate or previous names Cherry Blossom, NBMG Sample Site 2450
Related records 10149718, 10198458

Geographic coordinates

Geographic coordinates: -117.45764, 41.34628 (WGS84)
Elevation 1600
Relative position 30 MILES NNE OF WINNEMUCCA

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hot Springs Peak(quadrangle 1:24,000 scale)

Osgood Mountains(quadrangle 1:100,000 scale)

McDermitt(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Little 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 040N 040E 15 Nevada

Comments on the location information

  • APPROX. N 1/2 SEC 15 (?) (UNSURVEYED AREA). 9 CLAIMS AND FRACTIONS

Commodities

Commodity Importance
Mercury Primary
Antimony Critical Tertiary

Materials information

Materials Type of material
Cinnabar Ore
Stibnite Ore
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Silicification

Analytical data

Result YIELD WAS 23 LB HG PER FT. OF WORKINGS. 3 TO 20 LB ORE. SAMPLE 2450 COLLECTED FROM ORE DUMP AT TOP OF ORE BIN WHICH FED FURNACE CONTAINS 0.5 % FE, 2 % MG, 5 % CA, 0.07 %- TI, 300 PPM MN, 70 PPM B, 150 PPM BA, 20 PPM CR, 7 PPM CU, 30- PPM LA, 5 PPM NI, 200 PPM SB 10 PPM V, 100 PPM ZR.

Mineral occurrence model information

Model code 177
USGS model code 27a
Deposit model name Hot-spring Hg

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Havallah Formation;Pumpernickel Formation
    Rock description Havallah Formation;Pumpernickel Formation
    Stratigraphic age (youngest) Late Permian

Nearby scientific data

(1) -117.45764, 41.34628
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Reg.Struct: Thrust Fault, Folding ; Reg.Trends: Nne
Type of structure Local
Structure description Fault, Parallel To Sedimentary Bedding. The Fault Is Locally Multiple And In Places Dies Out Only To Reappear A Few Feet Above Or Below With Small Displ-Acement. The Plan Of The Fault Is Arcuate

Ore body information

  • General form PODS, LENSES ALONG FAULT 2 ONE
    Dip MODERATE
    Thickness 12.19M
    Length 60.96M
    Width 12.19M

Controls for ore emplacement

  • Gouge Zone With Seams And Disseminations

Comments on the geologic information

  • GEOL.COM: ORE OCCURS AS NEARLY PURE CINNABAR VEINLETS FILLING OPENINGS ALONG AND CLOSELY BENEATH THE FAULT; RICHEST ORE OCCURRED AS PODS RESULTING FROM REPLACEMENT OF HIGHLY FRACTURED SILICIFIED DOLOMITE EXTENDING SEVERAL FEET INTO THE FOOTWALL. ORE BODIES LOCALIZED WHERE FAULT "ROLLS" IN STRIKE TOWARD FOOTWALL, FORMING AN INVERTED WHICH GUIDED RISING SOLUTIONS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1936
Discoverer J. H. Cahill
Year of first production 1940
Production years 1940-1941, 1944-1945, 1948

Mining district

District name Poverty Peak District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Operator
    Owner Cordero Mining Co.
    First year 1944
  • Type Owner
    Owner Cahill, T. M.
    First year 1984

Production statistics

  • Year 1957
    Period To 1957
    Material HG
    Accuracy Accurate
    Description Cp_Grade: ^3-20 Lb/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Mercury Mercury 5195g/mt

Workings at the site

  • Type of workings Underground
    Length 609.6M
    Overall depth 39.62M

Comments on the workings information

  • MINE INCLUDES SEVERAL THOUSAND FEET OF UNDERGROUND OPENINGS DEVELOPED ON 6 LEVELS AND SEVERAL LARGE OPEN CUTS. THE- 6 ADITS ARE OPEN AND ACCESSIBLE. IN 1985, THERE WERE THE REMA-INS OF 5 WOOD CABINS ON THE SITE, REMAINS OF FURNACE ROOM WITH- FURNACE STILL PRESENT (3 FT DIAM, 25 FT LONG). POWER LINES RU-NNING INTO FURNACE ROOM STILL UP AND IN GOOD SHAPE. NUMEROUS C-UTS, STOPES,ADITS SCATTERED UP CANYON FROM FURNACE BUILDING AN-D OVER THE HILL TO SOUTH AND INTO SMALL CANYON SOUTH OF FURNAC-E BUILDING.

Comments on development

  • 6 CLAIMS

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    BAILEY, E.H, AND PHOENIX, D.A., 1944, QUICKSILVER DEPOSITS IN NEVADA: NEV. U. BULL., V.38, NO.5, GEOL AND MIN. SER. NO. 41.

  • Deposit

    VANDERBURG, O., 1938, RECONNAISSANCE OF MINING DISTRICTS IN HUMBOLDT CO., NEV; U.S.B.M. INF CIRC. 6995

  • Deposit

    JONES, R. B., 25 APR 85, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

  • Deposit

    BAILEY, E. H., RYTUBA, J. J. AND JONES, R. B., 1984, UNPUBLISHED DATA ON MERCURY DEPOSITS OF NEVADA.

  • Production

    USBM UNPUB DATA

General comments

Subject category Comment text
Deposit 1967, EARL P-. RIPLEY LEASED THE PROPERTY AND PRODUCED ORE. ADVANCED MINING- INDUSTRIES, INC. LEASED THE PROPERTY IN 1969-1971 PRODUCING 3-69 FLASKS FROM ORE PROCESSED IN A ROTARY FURNACE ON THE CONCHI-TA PROPERTY. RECENT WORK HAS PRODUCED A LIMITED AMOUNT OF CINN-ABAR, MARKETED AS CINNABAR CRYSTALS, AS RECENTLY AS 1980'S. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV
Deposit ORE DEP. OCCURS IN ROLLS BENEATH GOUGE ON A MINOR FAULT.. LOCALLY, MINOR STIBNITE ACCOMPANIES ORE.
Deposit DISCOVERED ABOUT 1936, BY J.H. CAHILL WHO STAKED 6 CLAIMS. OWNED BY MRS. CAHILL IN 1957; UNDER LEASE TO BELCO CORP AT THAT TIME. THIS HAS BEEN THE LARGEST PRODUCER IN THE DISTRICT. IN 1937, DEVELOPMENT CONSISTED OF 3 ADITS TOTALLING 300 FEET IN LENGTH. A 10-TON ROTARY FURNACE WAS INSTALLED IN 1939, YIELDING 490 FLASKS HG IN 1940. LESSEES IN 1941 RECOVERED 55 FLASKS HG. LESSEE CORDERO MINING CO. DID SOME DEVELOPMENT WORK IN 1943 SOME ORE WAS MINED BY LESSEES IN 1944. IN 1944, DEVELOPMENT CONSISTED OF ABOUT 2000 FT OF WORKINGS, MAINLY ON 2 LEVELS 50 FT. APART. A FAIRLY CONTINUOUS ORE BODY WAS STOPED FOR ABOUT 200 FT; WIDTH ABOUT 40 FT. IN 1954, I. WALTERS LEASED THE MINE AND PRODUCED A SMALL AMOUNT OF MERCURY FROM A 12-TON ROTARY FURNACE. NORTHERN- RESOURCES CORP LEASED THE PROPERTY IN 1955 AND PROCESSED ORE -IN THE ROTARY FURNACE AS WELL AS A GOULD FURNACE ON THE HAPGOO-D MINE. BELCO PETROLEUM CO ACQUIRED THE PROPERTY FROM NORTHERN- RESOURCES AND CONTINUED MINING ORE. FROM 1960 TO

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1973 Bergquist, Joel R. Nevada Bureau of Mines and Geology
Updater 01-MAR-1986 La Pointe, D.D. (Tingley, J.V.) 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.

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.