The Como-Eureka is a gold and silver mine located in Lyon county, Nevada.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Como-Eureka MRDS details
Site Name
Primary: Como-Eureka
Secondary: Nevada Deep Mines
Secondary: Boyle Tunnel
Commodity
Primary: Gold
Primary: Silver
Tertiary: Copper
Location
State: Nevada
County: Lyon
District: Como District
Land Status
Land ownership: BLM Administrative Area
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
Not available
Mineral Deposit Model
Model Name: Epithermal vein, Comstock
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silicification
Rocks
Name: Andesite
Role: Host
Age Type: Host Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Tetrahedrite
Ore: Pyrite
Gangue: Quartz
Comments
Comment (Workings): 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)
References
Reference (Deposit): CUTLER, HC, "COMO NEVADA," MINING & SCIENTIFIC PRESS, APRIL 13, 1912, PP 539-540.
Reference (Deposit): SIRDEVAN, WH, REPORT ON NEVADA DEEP MINES CO, UNPUBLISHED REPORT, ITEM 6, FILE 181, NBMG
Reference (Deposit): CARLISLE, HC, REPORT ON COMO MINES CO, UNPUBLISHED REPORT, ITEM 3 FILE 181, NBMG.
Reference (Deposit): STODDARD, C, CARPENTER, JA, MINERAL RESOURCES OF STOREY AND LYON COUNTIES, NEV (1950) NBMG BULL 49.
Nevada Gold
Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.
