Carrie Creek

Prospect in Alaska, United States with commodities Gold, Silver, Bismuth, Copper, Mercury, Molybdenum, Lead, Antimony, Tin, Tungsten, Zinc

Geologic information

Identification information

Deposit ID 10001714
MRDS ID A012498
Record type Site
Current site name Carrie Creek
Alternate or previous names Lynx Saddle, Missing Lynx, Tripper Ridge, West Carrie Creek

Geographic coordinates

Geographic coordinates: -144.26584, 64.28778 (WGS84)
Relative position The Carrie Creek prospect is located in the headwaters of the West Fork of the South Fork of the Goodpaster River, approximately 54 miles east-northeast of Delta Junction. The prospect covers 5 to 6 square miles, and is divided into four areas: Lynx Saddle, Missing Lynx, Tripper Ridge, and West Carrie Creek. The approximate center of the prospect is in SW1/4SW1/4 section 19, T. 7 S., R. 18 E., of the Fairbanks Meridian. A winter trail from the South Fork of the Goodpaster River provides access up Divide Creek. Carrie Creek and its tributaries are not labeled on current U.S.G.S. maps. It was not identified as a separate location by Cobb (1972) or by Cobb and Eberlein (1980). The Carrie Creek prospect is located on land selected by Doyon Limited. An occurrence was cited in Cobb and Eberlein (1980) for a sample assay reported in Menzie and Foster (1979). This sample was collected from somewhere on Tripper Ridge on Black Mountain in section 20, T. 7 S., R. 18 E., of the Fairbanks Meridian.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Bismuth Secondary
Copper Secondary
Mercury Secondary
Molybdenum Secondary
Lead Secondary
Antimony Secondary
Tin Secondary
Tungsten Secondary
Zinc Secondary

Comments on the commodity information

  • Gangue = Carbonate

Materials information

Materials Type of material
Arsenopyrite Ore
Bismuthinite Ore
Chalcopyrite Ore
Gold Ore
Molybdenite Ore
Pyrite Ore
Pyrrhotite Ore
Scheelite Ore
Sphalerite Ore
Stibnite Ore
Clay Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Silicic, sericitic, argillic, clay, and carbonate alteration are concentrated in the contact zones (Doyon Limited, 1998).

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -144.26584, 64.28778

Comments on the geologic information

  • Geologic Description = The Carrie Creek prospect is located in the headwaters of the West Fork of the South Fork of the Goodpaster River, southwest of Black Mountain. The exploration efforts have been concentrated in the north-trending Goodpaster River drainage and two tributaries: Tripper Creek and Missing Lynx Creek. Both creeks flow to the northwest. The area is characterized by rounded hills and flat-topped ridges (Thomas, 1970). The most prominent ridge is Black Mountain, which trends about 12 miles in a northerly direction and is underlain by Cretaceous granodiorite (Weber and others, 1978). Bordering the Black Mountain intrusive is a combination of augen gneiss, gneissic schist, and schist. There is intense shearing and faulting along the contact between the metamorphic and intrusive rocks. This shearing is observed in the underground workings to the north and at the surface as pronounced saddle-like depressions across the spurs extending westward from Black Mountain. This shear zone trends roughly N15E. The lode deposits in the area are gold-bearing quartz veins. Most of the veining and alteration occurs in the shear zone, although some alteration and veining favors the intrusive rocks (Doyon Limited, 1998). Silicic, sericitic, argillic, clay, and carbonate alteration are concentrated in the contact zones. The quartz veins contain various combinations of sulfides, including arsenopyrite, bismuthinite, chalcopyrite, molybdenite, pyrite, pyrrhotite, scheelite, sphalerite, and stibnite. Veins are commonly 1 to 2 feet in width; some are as wide as 8 feet (Doyon Limited, 1998). ? the Carrie Creek prospect has been divided into four areas: Lynx Saddle, Missing Lynx, Tripper Ridge, and West Carrie Creek. Further, these areas contain four mineralized shear zones: Gunsight Shear, Missing Lynx, Black Mountain, and Raincoat Ridge. These shear zones are typically north-northeast trending, subparallel, up to 2.5 miles long and 1000 feet wide. Soil anomalies are found on identified faults and contact zones. Soil samples contain up to 8,370 ppm As, 300 ppb Au, 6 ppm Bi, and 34 ppm Mo. Rock chip samples contain up to 5.62 ppm Au, 2,430 ppm As, 1,875 ppm Bi, 2,900 ppm Mo, greater than 10,000 ppm Sb, and 900 ppm W. Au often correlates with As and Sb. In intrusive rocks, Mo also correlates with gold, but is absent in metamorphic rocks (Doyon Limited, 1998). An occurrence was cited in Cobb and Eberlein (1980) for a sample assay reported by Menzie and Foster (1979) collected from the Carrie Creek area. This sample was collected from somewhere on Tripper Ridge on Black Mountain. The sample contained pyrite and molybdenite in quartz from a mineralized area in granitic rocks. The sample assayed 7 ppm Ag, greater than 10,000 ppm As, 0.3 ppm Au, 1.5 ppm Cu, and 20 ppm Pb (Menzie and Foster, 1979).? the Goodpaster region was first explored for placer gold in 1915. In the early 1930's, gold-bearing quartz veins were discovered in the upper Tibbs Creek (BD040) area to the north. Underground work in the Tibbs Creek drainage continued from 1936 to 1941. From 1978 to 1979, exploration of the Carrie Creek prospect included reconnaissance mapping, along with stream-sediment and selective grab rock-chip sampling. Additional mapping and a soil and rock chip grid were completed in 1981. In 1984, some composite vein sampling and surface investigations were carried out. Further soil and rock chip sampling was done in 1989. Exploration efforts increased from 1996 to 1998. A soil and rock chip grid was extended over an area 3 miles wide and 5 miles long. Three drill holes (core), totaling 1,997 feet, were completed in 1998. Further drilling is planned (Doyon Limited, 1998).
  • Age = Veins cut Cretaceous intrusion

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Active

Mining district

District name Goodpaster

Comments on the workings information

  • Workings / Exploration = The Goodpaster region was first explored for placer gold in 1915. In the early 1930's, gold-bearing quartz veins were discovered in the upper Tibbs Creek area to the north of the Carrie Creek prospect. Underground work in the Tibbs Creek drainage continued from 1936 to 1941. From 1978 to 1979, exploration efforts at the Carrie Creek prospect included reconnaissance mapping, along with stream-sediment and selective grab rock-chip sampling. Additional mapping and a soil and rock chip grid were completed in 1981. In 1984, some composite vein sampling and surface investigations were carried out. Further soil and rock chip sampling was done in 1989. Exploration efforts increased from 1996 to 1998. A soil and rock chip grid was extended over an area 3 miles wide and 5 miles long. Three drill holes (core), totaling 1,997 feet, were completed in 1998. Further drilling is planned (Doyon Limited, 1998).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012498
USGS Alaska Resource Data File ARDF BD010

Bibliographic references

  • Deposit

    Thomas, B.I., 1970, Reconnaissance of the gold-bearing quartz veins in the Tibbs Creek area, Goodpaster River, Big Delta quadrangle, central Alaska: U.S. Bureau of Mines Open-File Report 14-70, 12 p.

  • Deposit

    Weber, F.R., Foster, H.L., Keith, T.E.C., Dusel-Bacon, C., 1978, Preliminary geologic map of the Big Delta quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-529A, 1 sheet, scale 1:250,000.

  • Deposit

    Menzie, W.D., and Foster, H.L., 1979, Metalliferous and selected nonmetalliferous mineral resource potential in the Big Delta quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-529D, 61 p., 1 sheet, scale 1:250,000.

  • Deposit

    Doyon, Limited, 1998, Veta Prospects 1997 Volume 1: Doyon, Limited, unpublished report 98-10, 256 p. (Report held by Doyon, Limited, Fairbanks, Alaska.)

Comments on the references

  • Primary Reference = Doyon Limited, 1998

General comments

Subject category Comment text
Deposit Model Name = Shear-hosted, magmatic-hydrothermal vein
Deposit Other Comments = the Carrie Creek Prospect is located on land selected by Doyon Limited. For additional information contact Doyon Limited, Fairbanks, Alaska.

Reporter information

Type Date Name Affiliation Comment
Reporter 26-APR-1999 Cameron S. Rombach Alaska Division of Geological and Geophysical Surveys