Comeback Mine

Past Producer in Boise county in Idaho, United States with commodities Silver, Zinc, Lead, Gold, Copper
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. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10090093
MRDS ID W014412
Record type Site
Current site name Comeback Mine
Related records 10120021

Geographic coordinates

Geographic coordinates: -115.89263, 44.00849 (WGS84)
Elevation 1768
Relative position 3 MI SE GRIMES

Site location context

Political divisions (FIPS codes)

Boise(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Garden Valley(quadrangle 1:24,000 scale)

Deadwood River(quadrangle 1:100,000 scale)

Challis(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork Payette(hydrologic unit)

Middle Snake-Boise(hydrologic accounting unit)

Middle Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Boise 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 Idaho Boise

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 008N 005E 25 Idaho

Commodities

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

Materials information

Materials Type of material
Argentite Ore
Chalcopyrite Ore
Electrum Ore
Galena Ore
Silver Ore
Sphalerite Ore
Tetrahedrite Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Sericitized

Analytical data

Result ASSAY OF HAND SAMPLE: 48.2 OZ AU/TON
Result 217.7 OZ. AG/TON
Result 2.4% PB
Result 1.09% CU

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Idaho Batholith-Granodiorite, Quartz Monzonite;Porphyry Dikes
    Rock description Idaho Batholith-Granodiorite, Quartz Monzonite;Porphyry Dikes
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -115.89263, 44.00849

Economic information

Ore body information

  • Strike N 65 DEG E
    Dip 70 DEG N

Controls for ore emplacement

  • Fracture Zone

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1920
Discoverer Joseph Gornick, Louis Painich
Year of first production 1928

Mining district

District name Grimes Pass District

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Comeback Mining Co.

Production statistics

  • Year 1943
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^.48 % Cu, 8.02 % Pb, 6.65 % Zn, 2.81 Oz/Ton Au, 95.39 Oz/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Lead Lead 8wt-pct
    Trace Ore Copper Copper 0wt-pct
    Ore Silver Silver 2693g/mt
    Ore Gold Gold 79g/mt
    Ore Zinc Zinc 7wt-pct

Workings at the site

  • Type of workings Underground
    Length 1592.88M

Comments on the workings information

  • 4 TUNNELS

Reference information

Bibliographic references

  • Deposit

    ROSS, C. P., 1934, SOME LODE DEPOSITS IN THE NORTHWESTERN PART OF THE BOISE BASIN, IDAHO: USGS BULL 846-D, PP. 239-285.

  • Deposit

    USBM, 1975, ACTIVITY OF IDAHO MINING PROPERTIES, 1974: USBM, BOISE, IDAHO, 61 P.

  • Deposit

    ANDERSON, A. L., 1947, GEOLOGY AND ORE DEPOSITS OF BOISE BASIN, IDAHO: USGS BULL. 944-C, P. 119 - 319.

  • Deposit

    CAMPBELL, A., 1945, FORTY - SIXTH ANNUAL REPORT OF THE MINING INDUSTRY OF IDAHO FOR THE YEAR 1944.

  • Deposit

    5) BELL, R. N., 1935, THE GOLD RESOURCES OF IDAHO: MINING AND CONTRACTING REVIEW, V. 37, NO. 33, P. 6-7.

  • Deposit

    1934 GEOLMAP ROSS, C. P., BULL. 846 - D

  • Deposit

    1945 COMPILE 46TH ANN. IDAHO STATE INSPECTOR'S REPT., 1944

  • Deposit

    1947 GEOLMAP ANDERSON, A. L., BULL. 944-C.

  • Deposit

    1975 COMPILE USBM, MINING ACTIVITY LIST, 1974

  • Production

    ITEM 1, CAMPBELL, A., 1945, 46TH ANNUAL REPORT; ITEM 8, BELL, R. N., 1935, MINING AND CONTRACTING REVIEW, V. 37, NO. 33

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1976 Siefken, Robert R. (Miller, Pat) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.