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San Emidio Hg-Sulphur Prospects

Occurrence in Washoe county in Nevada, United States with commodities Mercury, Sulfur, Gypsum-Anhydrite
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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. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10040595
MRDS ID M055427
Record type Site
Current site name San Emidio Hg-Sulphur Prospects
Alternate or previous names NBMG Sample Site 2402, Mud Flat Prospect
Related records 10247410

Geographic coordinates

Geographic coordinates: -119.40212, 40.40127 (WGS84)
Elevation 1237
Relative position APPROXIMATELY 20 MILES SOUTH OF GERLACH.

Site location context

Political divisions (FIPS codes)

Washoe(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

San Emidio Desert North(quadrangle 1:24,000 scale)

Kumiva Peak(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Smoke Creek Desert(hydrologic unit)

Black Rock Desert(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Washoe

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 029N 023E 4,9,16 E2 Nevada

Comments on the location information

  • ON EAST SIDE OF SAN EMIDIO DESERT; UNSURVEYED TOWNSHIP. ; INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Mercury Primary
Sulfur Primary
Gypsum-Anhydrite Primary

Materials information

Materials Type of material
Cinnabar Ore
Gypsum Ore
Sulfur Ore
Chalcedony Gangue
Kaolinite Gangue
Opal Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Hydrothermal

Analytical data

Result SAMPLE 2402 FROM MORE NORTHERLY GROUP OF TRENCHES CONTAINS 0.05% FE, 0.02% MG., 0.15% CA, 0.2% TI, 50 PPM B, 500 PPM BA, 10 PPM CU, 5 PPM MO, 20 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 Unconsolidated Deposit > Alluvium
    Stratigraphic age (youngest) Pleistocene

Nearby scientific data

(1) -119.40212, 40.40127
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Range-Front Fault

Ore body information

  • General form LINEAR
    Length 4827.9M
    Width 30.48M

Controls for ore emplacement

  • Range-Front Fault Zone

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Small
Significant No

Mining district

District name San Emidio Desert Area

Land status

Ownership category Private

Comments on the workings information

  • ABOUT 12 TRENCHES SPACED 200-400 FT APART ACROSS THE ZONE. TRENCHES RUN FOR 0.25 MILE; SHALLOW PITS

Reference information

Bibliographic references

  • Deposit

    JONES, R.B., 4 JUL 84, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

  • Deposit

    BONHAM, H.F., JR. AND PAPKE, K.G., 1969, GEOLOGY & MINERAL DEPOSITS OF WASHOE & STOREY COUNTIES, NV, NBMG BULL 70, P. 94-96.

  • Deposit

    NBMG STAFF, 1985, NBMG OFR 85-3.

General comments

Subject category Comment text
Deposit CINNABAR OCCURS IN ALTERED PLEISTOCENE ALLUVIUM IN A N-S ZONE ALONG A RANGE-FRONT FAULT ZONE, FOR AT LEAST 3 MILES ALONG STRIKE. ASSOCIATED MINERALS ARE NATIVE SULFUR, GYPSUM, OPAL, CHALCEDONY, QUARTZ, KAOLINITE, SERICITE, AND OTHER ALTERATION MINERALS. ZONE IS OVER 100 FT WIDE IN PLACES. A THIN LAYER OF LATER ALLUVIAL MATERIAL COVERS THE ALTERED ZONE. CINNABAR WAS SEEN IN 2 PLACES ALONG THE ZONE AND AN HG SOIL ANOMALY WAS DETECTED AT A THIRD LOCALITY. CINNABAR OCCURS AS VERY FINE-GRAINED PARTICLES SCATTERED THROUGHOUT BOTH SILICIFIED AND NON-SILICIFIED ALTERED ROCK, AND AS COATING ON FRACTURES AND IN VOIDS. OCCURRENCE OF CINNABAR SEEMS TO FOLLOW NATIVE SULPHUR, BUT THERE ARE HIGH-SULFUR AREAS WITH NO CINNABAR AND CONVERSELY, CINNABAR OCCURRENCES WITH NO SULFUR. ALTERED ZONE ALMOST CERTAINLY REPRESENTS DEPOSITS OF EXTINCT HOT SPRINGS.
Deposit THIS RECORD HAS BEEN MERGED WITH M242712, WHICH HAS BEEN DELETED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1975 Gassaway, J. S. U.S. Geological Survey
Updater 01-JUN-1986 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology
Updater 01-APR-1993 Phinisey, J. D. (Marcus, S.) U.S. Geological Survey
Updater 01-JUN-1993 Marcus, S. 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

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