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Mike

Occurrence in Alaska, United States with commodities Silver, Gold, 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. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10308545
Record type Site
Current site name Mike

Geographic coordinates

Geographic coordinates: -149.05335, 67.76973 (WGS84)
Relative position The Mike occurrence is at an elevation of about 4,000 feet just east of the headwaters of Robert Creek (SE1/4 sec. 14, T. 34 N., R. 7 W., of the Fairbanks Meridian) approximately 7 miles north-northeast of Horace Mountain and about 1 1/2 miles west of the Cindy prospect (CH098). 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 D-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
Silver Primary
Gold Primary
Copper Primary
Lead Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Epidote Gangue

Alteration

  • Calc-silicate(?).

Mineral occurrence model information

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

Nearby scientific data

(1) -149.05335, 67.76973
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Mike occurrence is one of four previously grouped occurrences which, in addition to Mike, included Vicki (CH097), Cindy (CH098), and Pilgrim (CH099) (DeYoung, 1978). Newberry and others (1986) described in general a group of skarn prospects in the Chandalar area which includes the Mike occurrence. This group of skarns is northwest of a belt of Devonian(?) granitic rocks informally named the Horace Mountain plutons. Many of the skarns exhibit both prograde and retrograde mineral assemblages. Newberry and others (1986) stated that the mineralogy, mineralization, and alteration of these skarns categorize them as continental-margin, porphyry-related copper skarns. Early data on this group of prospects indicated the presence of small amounts of tactite-associated copper mineralization (DeYoung, 1978). Newberry and others (1986) classified the Mike prospect as a Cu (Zn-Ag?) skarn, and Newberry and others (1997) classified it as a calcic Cu skarn. The mineralogy of a specimen (identified only as being from the Mike-Vicki-Cindy prospects) includes epidote, chalcopyrite, pyrite, and sphalerite (Newberry and others, 1986). An analysis of this specimen ran 0.25 percent Cu, 0.83 percent Zn, 0.002 percent Pb, and 0.5 ppm Ag. A listing for the Mike prospect on the Ventures Resource Corporation (currently exploring Doyon, Limited lands in the Chandalar area) website (1998, URL http://www.venturesresource.com/) classifies it as a Cu-Au deposit, although no supporting data are given.
  • 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 Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Koyukuk

Comments on the workings information

  • Workings / Exploration = Claims located in 1972.

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: Vicki (CH097), Pilgrim (CH099), Evelyn Lee (CH059), Luna (CH101), Victor (CH064), and Ginger (CH060). In early reports (DeYoung, 1978, Newberry and others, 1986) the Mike prospect is grouped with all or some of the Pilgrim, Cindy, and Vicki prospects.

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.