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  3. Mineral Resource Data System (MRDS)

Como-Eureka

Past Producer in Lyon county in Nevada, United States with commodities Gold, Silver, Copper
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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. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10043884
MRDS ID M231177
Record type Site
Current site name Como-Eureka
Alternate or previous names Nevada Deep Mines, Boyle Tunnel
Related records 10310425

Geographic coordinates

Geographic coordinates: -119.47932, 39.15268 (WGS84)

Site location context

Political divisions (FIPS codes)

Lyon(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Como(quadrangle 1:24,000 scale)

Carson City(quadrangle 1:100,000 scale)

Reno(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Carson(hydrologic unit)

Carson(hydrologic accounting unit)

Central Lahontan(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 Lyon

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 015N 022E 14 Nevada

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Tertiary

Materials information

Materials Type of material
Pyrite Ore
Tetrahedrite Ore
Quartz Gangue

Alteration

  • (Local) Silicification

Mineral occurrence model information

Model code 150
USGS model code 25c
Deposit model name Epithermal vein, Comstock
Mark3 model number 16

Host and associated rocks

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

Nearby scientific data

(1) -119.47932, 39.15268
ListMap

Economic information

Ore body information

  • Strike N60-80E
    Dip 80N

Economic information about the deposit and operations

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

Mining district

District name Como District

Land status

Ownership category BLM Administrative Area

Comments on the workings information

  • THIS VEIN DEVELOPED TO GREATER EXTENT, PRODUCED MORE ORE THAN ANY OTHER IN DISTRICT, WIDE QTZ VEIN, 10-50 FEET IN WIDTH ON FOOTWALL, ABOUT 4 FEET OF SOFT CRUMBLY QTZ ON HANGING WALL, VEIN DEVELOPED ALONG STRIKE FOR ABOUT 1600 FEET, IS OXIDIZED DOWN TO 250 LEVEL. VALUES EXTENDED DOWN TO THIS LEVEL, VEIN BARREN BELOW. QUARTZ VEIN MADE UP OF HARD WHITE OR SLIGHTLY BLUISH-TINGED QUARTZ, BANDED IN SOME PLACES, WITH LATER CLEAR QTZ CRYSTALS FILLING CAVITIES (SIRDEUAN)

Reference information

Bibliographic references

  • Deposit

    CUTLER, HC, "COMO NEVADA," MINING & SCIENTIFIC PRESS, APRIL 13, 1912, PP 539-540.

  • Deposit

    SIRDEVAN, WH, REPORT ON NEVADA DEEP MINES CO, UNPUBLISHED REPORT, ITEM 6, FILE 181, NBMG

  • Deposit

    CARLISLE, HC, REPORT ON COMO MINES CO, UNPUBLISHED REPORT, ITEM 3 FILE 181, NBMG.

  • Deposit

    STODDARD, C, CARPENTER, JA, MINERAL RESOURCES OF STOREY AND LYON COUNTIES, NEV (1950) NBMG BULL 49.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 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.

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.