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Silver Jack Mine

Past Producer in Hinsdale county in Colorado, United States with commodities Silver, Lead, Gold
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  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. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10014691
MRDS ID D011576
Record type Site
Current site name Silver Jack Mine
Alternate or previous names Patented Claim: Silver Jack, MS 20073, Unpatented Claims: Silver Jack Nos. 2-10, 12-14, Silver Jack Extension

Geographic coordinates

Geographic coordinates: -107.47146, 38.10167 (WGS84)
Elevation 3368
Relative position 9.5 MILES N 59 W FROM LAKE CITY

Site location context

Political divisions (FIPS codes)

Hinsdale(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Uncompahgre Peak(quadrangle 1:24,000 scale)

Montrose(quadrangle 1:100,000 scale)

Montrose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Gunnison(hydrologic unit)

Gunnison(hydrologic accounting unit)

Gunnison(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

Grand Mesa, Uncompahgre and Gunnison National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Uncompahgre Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Hinsdale

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 045N;045N;044N 006W;005W;006W 36;32;01 SE OF SE (36); SW OF SW (32); NE OF NE (01) Colorado

Comments on the location information

  • MINE LIES ON BOTH SIDES OF SILVER CREEK 1000 FT ABOVE CONFLUENCE WITH EAST FORK CIMARRON RIVER AND 2.15 MILES NNW OF UNCOMPAHGRE PEAK. ELEV AND LAT-LONG GIVEN ARE FOR SOUTH ADIT IN SE SE SEC. 36. ; INFO FROM LAND.ST :1975

Commodities

Commodity Importance
Silver Primary
Lead Primary
Gold Primary

Comments on the commodity information

  • ORE MINERALS LISTED ABOVE ARE UNVERIFIED BUT ARE PROBABLY SIMILAR TO SULFIDE MINERALIZATION AT OTHER PRECALDERA VOLCANIC CENTER (CARSON) TO SOUTH. CU AND ZN ALSO MAY BE PRESENT, BUT THESE ARE UNVERIFIED.

Materials information

Materials Type of material
Pyrite Ore
Limonite Gangue

Analytical data

Result ORE ASSAYS CITED IN CDM REPTS.: ORE, 0.25 OZ/TON AU, 16 OZ/TON AG
Result SILVER JACK NO. 2 CLAIM: 0.13 OZ/TON AU, 15 OZ/TON AG
Result SILVER JACK NO. 10 CLAIM: 0.5 OZ/TON AU, 16 OZ/TON AG
Result SILVER JACK EXTENSION CLAIM: 0.35 OZ/TON AU, 56 OZ/TON AG, 10 % PB. STEVEN AND OTHERS' (1977) DUMP SAMPLE ASSAYED 0.09 OZ/TON AU AND 0.2 OZ/TON AG.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Monzonite
    Rock unit name Early Intermediate-Composition Lavas And Related Rocks--Intrusive Rocks (Monzonite And Monzonite Porphyry);Early Intermediate-Composition Lavas And Related Rocks--Intrusive Rocks (Andesite And Rhyodacite Porphyries);Early Intermediate-Composition Lavas And Related Rocks--Lava Flows;Early Intermediate-Composition Lavas And Related Rocks--Cone Breccias
    Rock description Early Intermediate-Composition Lavas And Related Rocks--Intrusive Rocks (Monzonite And Monzonite Porphyry);Early Intermediate-Composition Lavas And Related Rocks--Intrusive Rocks (Andesite And Rhyodacite Porphyries);Early Intermediate-Composition Lavas A
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyodacite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Monzonite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyodacite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -107.47146, 38.10167
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Volcanic Field, San Juan Depression
Type of structure Local
Structure description San Juan-Uncompahgre Calderas, Lake City Caldera, Cimarron Volcano

Ore body information

  • Thickness 7.62M

Controls for ore emplacement

  • Plug And Radiating Dikes From Precaldera Volcano

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1931

Mining district

District name Cimarron District

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Jim Ingram
    Home office Montrose, Co.
    First year 1968

Comments on the workings information

  • 35-FT SOUTH CROSSCUT TO VEIN, THENCE 410-FT SE DRIFT, THENCE 508-FT EAST DRIFT; AT 215 FT FROM INTERSECTION OF VEIN AND CROSSCUT IS 82-FT RAISE CONNECTING TO 40-FT DRIFT FROM SURFACE. SILVER JACK NO. 2 CLAIM: 522-FT TUNNEL DRIVEN GENERALLY EAST TO CONNECT WITH EAST DRIFT ON SILVER JACK CLAIM. SILVER JACK NO. 13 CLAIM: 22-FT-DEEP VERTICAL SHAFT WITH 15-FT EAST DRIFT AT BOTTOM.

Reference information

Bibliographic references

  • Deposit

    LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.

  • Deposit

    LIPMAN, P.W., AND OTHERS, 1973, REVISED VOLCANIC HISTORY OF THE SAN JUAN, UNCOMPAHGRE, SILVERTON, AND LAKE CITY CALDERAS IN THE WESTERN SAN JUAN MOUNTAINS, COLORADO: USGS JOUR. RESEARCH, V. 1, NO. 6, P. 627-642.

  • Deposit

    COLORADO DIV. MINES INF. REPTS.

  • Deposit

    BLM MINERAL SURVEY MS 20073

  • Deposit

    STEVEN, T.A., AND OTHERS, 1977, MINERAL RESOURCES OF STUDY AREAS CONTIGUOUS TO THE UNCOMPAHGRE PRIMITIVE AREA, SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS BULL. 1391-E, P. 36-37, 85.

General comments

Subject category Comment text
Deposit DEPOSIT IS ASSOCIATED WITH CIMARRON VOLCANO, LYING NORTH OF AND PREDATING FORMATION OF SAN JUAN-UNCOMPAHGRE AND LAKE CITY CALDERAS. WIDESPREAD SEQUENCE OF INTERMEDIATE-COMPOSITION (ANDESITE, RHYODACITE) CONE BRECCIAS INTERBEDDED WITH PORPHYRYTIC ANDESITE, RHYODACITE, AND QUARTZ LATITE FLOWS AND FLOW BRECCIAS IS CUT BY INTRUSIVE ROCKS OF CORE OF CIMARRON VOLCANO. ON SOUTH SIDE OF SILVER CREEK IS SMALL MONZONITE/MONZONITE PORPHYRY PLUG FROM WHICH RADIATE SEVERAL ANDESITE/RHYODACITE PORPHYRY DIKES. WORKINGS ON NORTH SIDE OF CREEK APPARENTLY DEVELOPED IN PROMINENT NORTH-SOUTH-TRENDING DIKE. CDM REPORTS CITE VEIN WIDTHS OF 2 TO 25 FT ON SURFACE AND 2 TO 5 FT UNDERGROUND.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1984 Schwochow, Stephen D. Colorado Geological Survey

Beyond USGS

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

External references

Maps centered on this site

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.