Rob Roy

Past Producer in Alaska, United States with commodities Gold, Antimony

Geologic information

Identification information

Deposit ID 10002966
MRDS ID A015463
Record type Site
Current site name Rob Roy
Alternate or previous names Saucy, Wolf

Geographic coordinates

Geographic coordinates: -147.30684, 65.07857 (WGS84)
Relative position Cobb (1972, MF-413), loc. 51; NW1/4NE1/4 sec. 22, T. 3 N., R. 2 E., of the Fairbanks Meridian. This deposit is on the divide at the head of Too Much Gold Creek. Accuracy is within 1,500 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Antimony Secondary

Materials information

Materials Type of material
Gold Ore
Pyrite Ore
Stibnite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -147.30684, 65.07857

Comments on the geologic information

  • Geologic Description = High grade gold mineralization occurs in a shear zone 30 feet wide that strikes N 60 W. The shear exhibits two mineralized zones that contain quartz with pyrite, gold and stibnite, as well as irregular or kidney-shaped pods of stibnite (Brooks, 1916; B 649). Intrusive breccia was noted to be present on the dump of the Rob Roby shaft (Pilkington, 1970). A small amount of ore was custom milled from a 100-foot shaft with 170 feet of drifts (Brooks, 1916; B 649). Operation were suspended in mid-1918 because of excess water in the workings (Martin, 1920).

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the production information

  • Production Notes = A small amount of ore was customed milled but production figures are not known (Brooks, 1916; B 649).

Comments on the workings information

  • Workings / Exploration = Workings consisted of a 100 foot shaft and 170 feet of drifts on two levels (Brooks, 1916; B 649).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015463
USGS Alaska Resource Data File ARDF LG173

Bibliographic references

  • Deposit

    Eakin, H.M., 1915, Placer mining in Seward Peninsula: U.S. Geological Survey Bulletin 622-I, p. 366-373.

  • Deposit

    Brooks, A.H., 1916, Antimony deposits of Alaska: U.S. Geological Survey Bulletin 649, 67 p.

  • Deposit

    Brooks, A.H., 1916, Antimony deposits of Alaska: U.S. Geological Survey Bulletin 649, 67 p.

  • Deposit

    Martin, G.C., 1920, The Alaska mining industry in 1918: U.S. Geological Survey Bulletin 712-A, p. 1-52.

  • 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

    Pilkington, H.D., 1970, Keystone Mines Inc. exploration program summary: International Minerals & Chemicals Corporation, 61 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., 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.

  • 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.

Comments on the references

  • Primary Reference = Brooks, 1916 (B 642)

General comments

Subject category Comment text
Deposit Model Name = Gold and stibnite in quartz shear zones.

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