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Dome View

Prospect in Alaska, United States with commodities Gold, Silver, Arsenic, Antimony
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Geologic information

Identification information

Deposit ID 10002889
MRDS ID A015376
Record type Site
Current site name Dome View

Geographic coordinates

Geographic coordinates: -147.48185, 65.04856 (WGS84)
Relative position Cobb (1972, MF-413), loc. 27; NE1/4NW1/4 sec. 35, T. 3 N., R. 1 E., of the Fairbanks Meridian. The Dome View claims lie in the head of the west fork of Last Chance Creek, about 1 mile northeast of Pedro Dome. Accuracy is within 2,500 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Arsenic Secondary
Antimony Secondary

Materials information

Materials Type of material
Gold Ore

Alteration

  • (Local) The predominant alteration present in samples collected on the prospect was stockwork silicification accompanied by hematite after pyrite, and scorodite after arsenopyrite (Fairbanks Exploration Inc., unpublished report, 1986).

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Mica Schist

Nearby scientific data

(1) -147.48185, 65.04856
ListMap

Comments on the geologic information

  • Geologic Description = The quartz mica schist which makes up the country rock at this prospect trends N 60 E and dips 15 to 20 SE. Diorite of the Pedro Dome intrusive crops out a short distance south of the adit. The prospect was accessed by a 145-foot-long adit on a shear zone striking N 40 E and dipping 70 NW. The shear zone ranges from 12 to 40 inches wide and averages 30 inches. It is composed of crushed and brecciated white quartz in the hanging wall and more massive white quartz in the footwall. Samples collected from the margins of the shear contained from $0.38 to $3.26 per ton in gold (0.02 to 0.15 ounces of gold per ton) but do not represent the higher grade portion of the shear which was unsafe to sample (Hill, 1933). Approximately 1,300 tons of ore was extracted from the adit which was estimated to contain $5 per ton in gold (0.24 ounces of gold per ton). A second tunnel, known as the Dome View #2, was driven on a shear about 1,000 feet southwest of the Dome View #1 adit. The Dome View #2 was thought to be the same shear as exposed in the Dome View #1 adit; however, the Dome View #2 shear dips in the opposite direction and probably represents a different shear zone. ? the prospect was mapped and sampled in 1933 by Spencer and O'Neill (1934) who reported that a shaft sunk near the Dome View #2 adit had exposed arsenopyrite- and pyrite-rich quartz containing a little free milling gold. Spencer and O'Neill (1934) attributed the formation of the Dome View prospect to the Pedro Dome intrusive body. Scorodite and iron oxide are common in brecciated quartz from the Dome View prospect. Two samples collected at 18 and 30 feet from the Dome View #1 portal averaged 0.10 and 0.12 ounces of gold per ton, over 18 and 24 inches, respectively. A grab sample of quartz-rich material from this adit's dump returned 0.32 ounces of gold per ton A dump sample from the Dome View #2 shaft contained 1.94 ounces of gold per ton from material containing 30 to 40% sulfides. The shear at the Dome View #2 shaft trends N 85 E and dips 70 SW. Two samples collected from the dump of the Dome View #2 shaft in 1969 contained greater than 150 ppm gold.? the prospect was examined in 1986 by Fairbanks Exploration Inc. (Fairbanks Exploration Inc., unpublished report, 1986). Exploration pits and at least two caved adits on the prospect expose bedrock similar to those at the Newsboy mine; however felsic schist apparently constitutes a smaller portion of the rock section in the vicinity of the Dome View prospect. The predominant alteration present in samples collected on the prospect was stockwork silicification accompanied by hematite after pyrite, and scorodite after arsenopyrite (Fairbanks Exploration Inc., unpublished report, 1986). Despite the lack of intense alteration, gold values ranged up to 6100 ppb and were accompanied by anomalous silver, antimony and arsenic. No work has been conducted on this prospect since 1986.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the production information

  • Production Notes = Approximately 1300 tons of ore was mined from the Dome View #1 adit and it was estimated to contain $5 per ton in gold (0.24 ounces of gold per ton) (Hill, 1933).

Comments on the workings information

  • Workings / Exploration = The Dome View prospect contains exploration pits and two adits, Dome View #1 and Dome View #2. The adits were caved by 1986 (Fairbanks Exploration Inc., unpublished report, 1986). Dome View #2 is about 1,000 feet southwest of Dome View #1.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015376
USGS Alaska Resource Data File ARDF LG096

Bibliographic references

  • Deposit

    Hill, J.M., 1933, Lode deposits of the Fairbanks District, Alaska: U.S. Geological Survey Bulletin 849-B, p. 29-163.

  • Deposit

    Spencer, W.W. and O'Neill, W.A., 1934, A survey of gold quartz veins on the north flank of Pedro Dome: University of Alaska, Fairbanks, Bachelor of Science thesis, 52 p.

  • Deposit

    Chapman, R.M., and Foster, R.L., 1969, Lode mines and prospects in the Fairbanks district, Alaska: U.S. Geological Survey Professional Paper 625-D, 25 p., 1 plate.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-633, 72 p.

  • Deposit

    Freeman, C.J., 1992, 1991 Golden Summit project final report, volume 2: Historical summary of lode mines and prospects in the Golden Summit project area, Alaska: Avalon Development Corp., 159 p. (Report held by Freegold Recovery Inc. USA, Vancouver, British Columbia.)

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Livengood quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-819, 241 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Livengood quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-413, 2 sheets, scale 1:250,000.

Comments on the references

  • Primary Reference = Hill, 1933

General comments

Subject category Comment text
Deposit Model Name = Polymetallic vein (Cox and Singer, 1986; model 22c).

Reporter information

Type Date Name Affiliation Comment
Reporter 04-MAY-1999 C.J. Freeman Avalon Development Corporation
Reporter 04-MAY-1999 J.R. Guidetti Schaefer Avalon Development Corporation