Table Mountain

The Table Mountain is a gold mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Table Mountain

Commodity

Primary: Gold
Secondary: Copper
Secondary: Zinc

Location

State: Alaska
District: Circle

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Enargite
Ore: Gold
Ore: Pyrrhotite
Ore: Sphalerite
Ore: Arsenopyrite
Ore: Chalcopyrite
Gangue: Biotite
Gangue: Quartz
Gangue: Tourmaline

Comments

Comment (Exploration): Status = Inactive

Comment (Geology): Geologic Description = The metamorphic rocks in the Table Mountain area belong to the quartzite and quartzitic schist unit of Foster and others (1983) and are composed of light gray quartzite, black biotite schist, fine-grained greenish-gray mafic rocks and light-greenish-gray calc-silicate rocks (Burack, 1983). Granite crops out over an area of only about 2 square km, but the distribution of contact metamorphosed rocks suggests that granite underlies much of the Table Mountain area at relatively shallow depths (Burack, 1983).? Menzie and others (1987), reported that the highest concentrations of gold (2.6 to 140 ppm) occur just west of Table Mountain in black biotite schist and in quartz veins adjacent to a fault zone (breccia in granite) that is intruded by a sulfide-bearing hypabyssal felsic dike. Gold was detected in lesser amounts (0.05 to 0.2 ppm) in country rocks adjacent to a granite pluton that crops out five km to the northeast of the black biotite schist. The occurrences contain pyrrhotite, arsenopyrite, minor chalcopyrite, and rare enargite and sphalerite (Menzie and others, 1987, p. 1).? the Table Mountain occurrences show traces of silver and low levels of tin in the hypabyssal dike and in an iron-stained sample of the breccia. Two samples of a quartz vein containing sulfides along the vein walls both contained high values of gold, arsenic, and copper. Antimony was detected in both samples (Menzie and others, 1987, p. 4).? In the occurrences in and adjacent to the granite, gold was detected only in the sulfide-bearing hypabyssal felsic dike. Silver and tin were detected in the dike and in the granite adjacent to the dike. A sample of this dike without sulfides contained detectable tin but not gold or silver. A sample of quartzite from adjacent to the pluton did not contain gold, silver, or tin in detectable amounts (Menzie and others, 1987, p. 4).? In 1986, Alaska Division of Geological and Geophysical Surveys collected samples of auriferous tourmaline-quartz veins and hornfelsed biotite-tourmaline schists from the Table Mountain area. Field work in 1987 showed that the biotite-tourmaline schists and tourmaline-quartz veins are present throughout much of the north side of Table Mountain and that they are not restricted to fault zones. The widespread distribution of these veins is attributed either to (1) remobilization from stratiform occurrences or (2) hydrothermal mineralization associated with nearby abundant felsite dikes. These widspread occurrences suggest that this area has significant lode gold potential (Smith and others, 1987, p. 6-15).? Claims were active in 1981, but type of work is unknown (Menzie and others, 1983).

Comment (Workings): Workings / Exploration = Surface rock samples taken. Claims were active in 1981 but type of work is unknown (Menzie and others, 1983).

Comment (Reference): Primary Reference = Menzie and others, 1987.

References

Reference (Deposit): Smith, T.E., Pessel, G. H., and Wiltse, M.A., 1987, Mineral assessment of the Lime Peak-Mt. Prindle area, Alaska: Alaska Division of Geological and Geophysical Surveys Miscellaneous Paper 29, 712 p., scale 1:63,360.

Reference (Deposit): Menzie, W.D., Foster, H.L., Tripp, R.B., and Yeend, W.E., 1983, Mineral resource assessment of the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-170-B, 61 p., 1 sheet, 1:250,000.

Reference (Deposit): Menzie, W.D., Hua, R., and Foster, H.L., 1987, Newly located occurrences of lode gold near Table Mountain, Circle quadrangle, Alaska: U.S. Geological Survey Bulletin 1682, 13 p.

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