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Unnamed (on Candle Creek)

Prospect in Alaska, United States with commodities Gold, Silver, Copper, Mercury, Antimony
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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 10307822
Record type Site
Current site name Unnamed (on Candle Creek)

Geographic coordinates

Geographic coordinates: -155.83693, 62.86245 (WGS84)
Relative position This prospect is situated in the valley of the west fork of Candle Creek at an elevation of 950 feet (290 m) in the SW1/4 sec. 15, T. 32 N., R. 35 W., of the Seward Meridian. The reporter visited the site in 1978 and in 1990.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

McGrath D-6(quadrangle 1:63,360 scale)

McGrath NW(quadrangle 1:100,000 scale)

McGrath(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Stony River(hydrologic unit)

Upper Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

MTNT, Limited(ANCSA Village)

ANCSA Village NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Secondary
Mercury Secondary
Antimony Critical Secondary

Materials information

Materials Type of material
Arsenopyrite Ore
Chalcopyrite Ore
Cinnabar Ore
Dolomite Gangue
Quartz Gangue

Alteration

  • (Local) Ankerite, epidote, and sericite.

Mineral occurrence model information

Model code 78
USGS model code 20c
Deposit model name Porphyry Cu-Au
Mark3 model number 34

Nearby scientific data

(1) -155.83693, 62.86245
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The prospect consists of copper-gold-silver-arsenic-, and mercury-bearing, mineralized zones that occur in plutonic rocks of the Candle Hills volcanic-plutonic complex (Bundtzen and Miller, 1997). The Candle Hills pluton yielded a K-Ar biotite age of 69.7 Ma (Bundtzen and Laird, 1983). The lode prospect occurs upslope and upstream from the rich Candle Creek placer gold deposit, which produced about 4,304 kilograms (138,377 ounces) gold to 1997 (MG002). According to Bundtzen and Miller (1997), an ankerite-bearing alteration zone ranging from 5 to 16 meters thick can be traced for about 350 meters along a faulted (?) contact between an augite-rich, olivine monzonite and biotite quartz monzonite pluton and basaltic andesite. Thin quartz veinlets containing anomalous gold, antimony, arsenic, and mercury occur in a larger, 600 meter by 45 meter , elliptically shaped area with anomalous gold (200 ppb) and mercury (5,000 ppb) in soils. Selected samples collected by ACNC Inc. during a regional trenching and drilling program yielded values of up to 3.76 grams/tonne gold in measured drill intercepts. Nearby copper-bearing volcanics have yielded values of up to 313 ppm copper in disseminated chalcopyrite-epidote clots and stockwork veins.
  • Age = Inferred to be 69.7 Ma, based on a sericite age from Candle pluton (Bundtzen and Miller, 1997).

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Inactive

Mining district

District name McGrath

Comments on the reserve resource information

  • Reserves = None known.

Comments on the workings information

  • Workings / Exploration = Exploration work by ACNC Inc. in 1989 and 1990 discovered an elliptically shaped, 600 meter by 45 meter zone of anomalous gold (up to 200 ppb) and mercury(up to 5,000 ppb) values in soils. Selected samples collected by ACNC Inc. during a follow-up trenching and drill program (totaling about 700 meters of diamond core) yielded values of up to 3.76 g/tonne gold in measured drill intercepts. ASA Inc. completed additional drilling into the prospect in 1995, but specific exploration results of these efforts are unknown.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Bundtzen and Miller, 1997

General comments

Subject category Comment text
Deposit Model Name = Porphyry copper-gold (Cox and Singer, 1986; model 20c).

Reporter information

Type Date Name Affiliation Comment
Reporter 25-NOV-98 T.K. Bundtzen Pacific Rim Geological Consulting

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.