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Cindy

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 10307341
Record type Site
Current site name Cindy

Geographic coordinates

Geographic coordinates: -148.99334, 67.76973 (WGS84)
Relative position The Cindy occurrence is at an elevation of about 5,100 feet on a peak just east of the headwaters of Robert Creek (sec. 18, T. 34 N., R. 6 W., of the Fairbanks Meridian) and approximately 7 3/4 miles northeast of Horace Mountain. It is about 1 mile south of the Vicki prospect (CH097). 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-4(quadrangle 1:63,360 scale)

Chandalar N(quadrangle 1:100,000 scale)

Chandalar C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

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

  • (Local) 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) -148.99334, 67.76973
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Cindy occurrence is one of a number of skarn deposits in the Chandalar area which have been described in general by Newberry and others (1986). These skarns are all located northwest of a belt of Devonian(?) granitic rocks informally named the Horace Mountain plutons. Many 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 reports (DeYoung, 1978) group the Cindy prospect with the Mike (CH100), Vicki (CH097), and Pilgrim (CH099) prospects, all of which Newberry and others (1986) classified as Cu (Zn-Ag?) skarns. The mineralogy of a specimen (identified only as being from the Mike-Vicky-Cindy prospects) includes epidote, chalcopyrite, pyrite, and sphalerite (Newberry and others, 1986). Analyses 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 Cindy 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 gold deposit, although no 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

Comments on exploration

  • Status = Not determined

Mining district

District name Koyukuk

Comments on the workings information

  • Workings / Exploration = Claims located in 1972. Surface sampling.

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: Mike (CH100), Vicki (CH097), Pilgrim (CH099), Evelyn Lee (CH059), Luna (CH101), Victor (CH064), and Ginger (CH060)..In early reports (DeYoung, 1978; Newberry and others, 1986) the Cindy prospect is grouped with all or some of the Pilgrim, Mike, and Vicki prospects.

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-99 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.