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Guanomi Mine

Occurrence in Washoe county in Nevada, United States with commodities Molybdenum, Copper, Silver, Gold
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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. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10043790
MRDS ID M231071
Record type Site
Current site name Guanomi Mine
Alternate or previous names Foster's Camp, Pyramid Lake

Geographic coordinates

Geographic coordinates: -119.45433, 39.84433 (WGS84)
Elevation 1201

Site location context

Political divisions (FIPS codes)

Washoe(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pah Rah Mountain(quadrangle 1:24,000 scale)

Reno(quadrangle 1:100,000 scale)

Reno(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Pyramid-Winnemucca Lakes(hydrologic unit)

Truckee(hydrologic accounting unit)

Central Lahontan(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

Geographic areas

Country State County
United States Nevada Washoe

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 023N 022E 24 Nevada

Comments on the location information

  • ON SW SHORE PYRAMID LAKE

Commodities

Commodity Importance
Molybdenum Primary
Copper Secondary
Silver Secondary
Gold Secondary

Materials information

Materials Type of material
Molybdenite Ore
Silver Ore
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Quartz-Sericite-Pyrite To Propylitization

Analytical data

Result 0.10% CU IN MINERALIZED STOCK

Mineral occurrence model information

Model code 80
USGS model code 21b
Deposit model name Porphyry Mo, low-F

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite

Nearby scientific data

(1) -119.45433, 39.84433
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Breccia Zone

Controls for ore emplacement

  • Breccia Zone

Comments on the geologic information

  • QUARTZ MONZONITE PORPHYRY INTRUDES ASH FLOW TUFFS OF HARTFORD HILL RHYOLITE THIN OXIDE ZONE CAPS PRIMARY SULFIDES. ALTERATION AND MINERALIZATION PRESENT IN THE QUARTZ MONZONITE STOCK SUGGESTS THE POSSIBILITY OF A COMMERCIAL BODY OF MOLY ORE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Comments on the workings information

  • ORIGINALLY PROSPECTED IN 1920'S AS A AU-AG PROSPECT, WAS EXPLORED IN THE 1930'S AND AGAIN IN 1971-72 AS A MO-CU PROSPECT. OUTCROP AREA COVERS ONLY FEW HUNDRED SQUARE YARDS, IS SURROUNDED BY LAKE LAHONTAN SEDIMENTS. LARGER OUTCROP OF ALTERED QUARTZ MONZONITE PORPHYRY OCCURS TO SOUTHWEST, ON RIDGE ON EAST SIDE OF TOM ANDERSON CANYON.

Reference information

Bibliographic references

  • Deposit

    BONHAM, HF, GEOL & MIN DEP WASHOE, STOREY CO, NEV, NBMG BULL 70, 1969

  • Deposit

    PROCHNAU, JF, SUMMARY REPORT ON 1971-72 EXPLORATION PROGRAM, PYRAMID LAKE (GUANOMI) PROPERTY, PAIUTE INDIAN RES, ... NEV, JAN 1973 PRIVATE REPORT, AMER SELCO, CORP, FROM NBMG FILES, RENO.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1978 Tingley, J.V. Nevada Bureau of Mines and Geology

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.