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Ginger

Prospect in Alaska, United States with commodity Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10001398
MRDS ID A012141
Record type Site
Current site name Ginger

Geographic coordinates

Geographic coordinates: -149.28334, 67.70972 (WGS84)
Relative position This site is at an elevation of about 4,550 feet on the ridge between Big Spruce Creek and Sheep Creek (NE1/4 sec. 11, T. 33 N., R. 8 W., of the Fairbanks Meridian) approximately 5 miles northwest of Horace Mountain. The location is accurate within a 1/2-mile radius.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Chandalar C-5(quadrangle 1:63,360 scale)

Chandalar N(quadrangle 1:100,000 scale)

Chandalar(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Doyon, Limited(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Magnetite Ore
Pyrite Ore

Alteration

  • (Local) Calc-silicate.

Mineral occurrence model information

Model code 59
USGS model code 18b
Deposit model name Skarn Cu
Mark3 model number 8

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Skajit Limestone
    Rock description Skajit Limestone
    Stratigraphic age (youngest) Late Devonian

Nearby scientific data

(1) -149.28334, 67.70972
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Ginger prospect is one of a number of skarn prospects in the Chandalar area. Published information specific to the geology of individual skarns is scarce. Early reports described the Ginger prospect as copper sulfides and/or malachite-azurite stains in a thrust fault-bounded block of Skajit Limestone, along with isolated tactite bodies containing less than 0.2 percent Cu. Later descriptions by Newberry and others (1986) included the Ginger prospect in a group of skarn deposits northwest of a belt of Devonian(?) granitic rocks informally named the Horace Mountain plutons. Many of these skarns exhibit both garnet/pyroxene prograde and epidote/actinolite retrograde mineral assemblages. Newberry and others (1986) stated that the mineralogy, mineralization, and alteration of these skarns tend to place them in the category of continental-margin, porphyry-related copper skarns. A notation on the Newberry and others (1986) prospect location map classified the Ginger prospect as a Cu-Ag skarn. The prospect is located in an area mapped by Dillon and others (1996) as Devonian tactite and Devonian aplite (a component of the Horace Mountain plutonic assemblage), within a more extensive terrane of phyllite and marble. Newberry and others (1986) described the mineralogy of a hand specimen from this prospect as epidote, actinolite, chalcopyrite, pyrite and magnetite and the metal content as 7.8 percent Cu and 57 ppm Ag. In a listing posted on the Ventures Resource Corporation (currently exploring Doyon lands in the area under an exploration agreement with Doyon, Limited) website (URL http://www.venturesresource.com/), the Ginger prospect is noted as a Cu prospect.
  • Age = Devonian based on reported Early Devonian Pb/Pb zircon ages from the associated Baby Creek batholith and Horace Mountain plutons (Dillon and others, 1996).

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Not determined

Mining district

District name Koyukuk

Comments on the workings information

  • Workings / Exploration = Eight lode claims staked in 1969-70.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Newberry and others, 1986

General comments

Subject category Comment text
Deposit Model Name = Cu skarn deposits (Cox and Singer, 1986; model 18b)
Deposit Other Comments = See also: Evelyn Lee (CH059), Hurricane-Diane (CH062), and Luna (CH101). Alaska Kardex No. 031-53H (Kardex is a card file mining claim information system located at the State of Alaska DNR Public Information Center in Fairbanks).

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-1999 J.M. Britton U.S. Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative Alaska resources

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