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Protection Group Mine

Producer in Elko county in Nevada, United States with commodities Gold, Silver, Copper, Lead, Zinc
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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. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10045557
MRDS ID M233324
Record type Site
Current site name Protection Group Mine

Geographic coordinates

Geographic coordinates: -115.97065, 41.84518 (WGS84)
Relative position 3/4 OF A MILE BELOW MOUNTAIN CITY (UTM APPROX. I 200 M.

Site location context

Political divisions (FIPS codes)

Elko(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mountain City(quadrangle 1:24,000 scale)

Jarbidge Mountains(quadrangle 1:100,000 scale)

Wells(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Owyhee(hydrologic unit)

Middle Snake-Boise(hydrologic accounting unit)

Middle Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Humboldt-Toiyabe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Nevada Elko

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 046N 053E 31 Nevada

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Secondary
Lead Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Cerargyrite Ore
Galena Ore
Proustite Ore
Sphalerite Ore
Stephanite Ore
Tetrahedrite Ore
Pyrite Gangue
Pyromorphite Gangue
Quartz Gangue

Alteration

  • (Local) Leaching Of Ferromags And Sericitization Of Feldspars

Analytical data

Result SORTED ORE CARRIED $100/TON IN AG AND AU

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Mountain City Quartz Monzonite
    Rock description Mountain City Quartz Monzonite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Mountain City Quartz Monzonite
    Rock description Mountain City Quartz Monzonite

Nearby scientific data

(1) -115.97065, 41.84518
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Faults

Ore body information

  • General form TABULAR
    Length 228.6M
    Width 1.22M

Controls for ore emplacement

  • Faults

Comments on the geologic information

  • IN ROBERTS ETAL P. 29 THE AHE OF MINERALIZATION IS PLACED AS EARLY TERTIARY VEIN IS A FISSURE FILLING IN GRANDDIORITE, UP TH 4 FT. WIDE

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1872
Year of first production 1872

Mining district

District name Mountain City

Comments on the production information

  • OVER $100,000 WORTH OF PRODUCTION INCLUDING SOME LEAD AND ZINC. 1947- ORE AVERAGED 40 OZ/TON AG AND 0.75 OZ/TON AU.

Workings at the site

  • Type of workings Underground
    Length 237.74M
    Overall depth 18.9M

Comments on the workings information

  • TUNNEL, SHAFT

Comments on development

  • MINE FIRST WORKED IN THE EARLY 1870'S, AND REOPENED IN 1946 FOR A 3-YEAR PERIOD DURING WHICH 2000 TONS ORE AVERAGING 40 OZ/TON AG WAS PRODUCED(ALSO 0.75OZ/TAU). A 10-STAMP AMALGAMATING AND CONCENTRATING MILL WAS BUILT NEAR THE PROTAL OF THE TUNNEL TO TREAT

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit VEIN, FISSURE FILLING.
Deposit THE VEIN IS APPROX. 4 FEET WIDE. THE MINE WAS FIRST WORKED IN THE EARLY 1870'S BUT WAS REOPENED IN 1946 AND FOR A THREE YEAR PERIOD PRODUCED 2,000 TONS OF ORE AVERAGING 40 OZ/TON AG, AND 0.07 OZ/TON AV. A 10-STAMP AMALGAMATING & CONCENTRATING MILL WAS BUILT NEAR THE PORTAL OF THE TUNNEL TO TREAT THE ORE. 62-FT SHAFT & TUNNEL IN 1930'S; 80-FT ADIT, TOO. PROTECTION VEIN HAS BEEN FOLLOWED FOR 750 FT. ; INFO.SRC : GRANG
Deposit Discovery Year: EARLY 1870'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1979 Taylor, J. K. 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.