Rhodo

The Rhodo is a gold and silver 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: Rhodo

Commodity

Primary: Gold
Primary: Silver
Secondary: Lead
Secondary: Zinc
Secondary: Mercury
Secondary: Arsenic
Secondary: Copper

Location

State: Alaska
District: Alaska Peninsula

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

Model Name: Polymetallic veins

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: The wall rocks exhibit strong carbonate alteration accompanied by pyrite.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Sphalerite
Ore: Pyrite
Ore: Gold
Ore: Galena
Ore: Chalcopyrite
Gangue: Siderite
Gangue: Rhodonite
Gangue: Quartz
Gangue: Calcite

Comments

Comment (Workings): Workings / Exploration = UNC Teton Exploration Drilling Company collected 14 samples of this deposit. Their channel samples contained as much as 0.13 ppm gold and 1.3 ppm silver; their grab samples contained as much as 5.46 ppm gold, 108 ppm silver, 2,200 ppm copper, 7.88 percent lead, 8.4 percent zinc, 140 ppm arsenic, and 1.5 ppm mercury. Earlier workers drove a short adit on the prospect (Wilson and others, 1988).

Comment (Exploration): Status = Inactive

Comment (Deposit): Model Name = Epithermal gold vein, Polymetallic veins (Cox and Singer, 1986; model 22c)

Comment (Deposit): Other Comments = the site is located on land patented by, or interim-conveyed to, the Aleut Corporation.

Comment (Geology): Geologic Description = The Rhodo vein system, exposed over a 400-foot vertical extent, cuts andesite of the late Eocene to early Oligocene Popof volcanic rocks (Wilson and others, 1995). The system is 4 to 5 feet thick, and consists of quartz-carbonate veins containing chalcopyrite, galena, sphalerite, and pyrite. The veins are generally fine grained with very few vugs or open-growth features. The veins are unique for this area in containing the carbonate gangue minerals calcite, rhodonite, and siderite. There may be a vertical zonation marked by increased base metals at lower elevations (Peterson and others, 1982). Eight channel samples contained as much as 0.13 ppm gold, 1.3 ppm silver, 290 ppm copper, 1,830 ppm lead, 198 ppm zinc, 310 ppm arsenic, and 0.45 ppm mercury. Six grab samples contained as much as 5.46 ppm gold, 108 ppm silver, 2,200 ppm copper, 7.88 percent lead, 8.4 percent zinc, 140 ppm arsenic, and 1.5 ppm mercury (Peterson and others, 1982).

Comment (Geology): Age = Eocene or younger.

Comment (Reference): Primary Reference = Peterson and others, 1982

References

Reference (Deposit): Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 map sheet, scale 1:250,000.

Reference (Deposit): Wilson, F.H., White, W.H., and DuBois, G.D., 1988, Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 88-666, 128 p., scale 1:250,000.

Reference (Deposit): Peterson, R.J., Lemmers, J., Handverger, P., Gallagher, J., Pilcher, R., East, J., Macleod, T., Bartels. E., 1982, Geology and precious metals potential Unga, Popof, and Korovin Islands, Shumagin Group, Aleutian Chain, Alaska: UNC Teton Exploration Drilling Company report, 127 p., 5 map sheets, various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)

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