Unnamed (south of the north fork of the East Fork Chandalar River)

The Unnamed (south of the north fork of the East Fork Chandalar River) is a copper and zinc 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: Unnamed (south of the north fork of the East Fork Chandalar River)

Commodity

Primary: Copper
Primary: Zinc

Location

State: Alaska
District: Chandalar

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
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

Not available

Comments

Comment (Reference): Primary Reference = Barker, 1978

Comment (Workings): Workings / Exploration = Barker (1978) reported 202 claims located in 1975 (ACH and CHA groups), accompanied by exploration that included drilling, which was continuing in 1978. DeYoung (1978) reports 118 claims staked in 1976. Ninety-three are in the Chandalar quadrangle; the remaining 25 extend east into the Christian quadrangle.

Comment (Geology): Geologic Description = There is little descriptive information on this occurrence. DeYoung (1978) described the occurrence as a stratabound(?) Cu-Zn prospect, and Barker (1978, loc. 11) reported that copper values appear to be related to Upper Devonian black metaclastic rocks adjacent to, or under, a thrust unit of Skajit Limestone. Geologic mapping shows the area to be underlain principally by Devonian(?) Hunt Fork Shale black slate, phyllite, and phyllitic siltstone, Devonian limestone and siltstone, and a thrust slice of the Skajit Limestone (Brosgi and Reiser, 1964). A basal conglomerate(?) of the Hunt Fork Shale has been mapped locally in the area.

Comment (Deposit): Other Comments = Little information is available about this site. Location 11 in Barker (1978) is on a very small scale map, but it is reasonably coincident with loc. 52 on DeYoung's (1978) map. The locations herein are considered equivalent. The claim block outline is shown on U.S. Bureau of Mines (1973) mineral location overlay. It also corresponds to location 29 on their later version of the mineral location overlay (Maas, 1987, USBM OFR 10-87). ? Alaska Kardex No. 031-070 (Kardex is a card file mining claim information system located at the State of Alaska DNR Public Information Center in Fairbanks).

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Barker, J.C., 1978, Mineral Investigations of certain lands in the eastern Brooks Range: a summary report: US Bureau of Mines Open-File No. 63-78

Reference (Deposit): DeYoung, J.H., Jr., 1978, Mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-878-B, 2 sheets, scale 1:250,000.

Reference (Deposit): Maas, K.M., 1987, Maps summarizing land availability for mineral exploration and development in northern Alaska, 1986: U.S. Bureau of Mines Open-File Report 10-87, 33 sheets.

Reference (Deposit): Maas, K.M., 1987, Maps summarizing land availability for mineral exploration and development in northern Alaska, 1986: U.S. Bureau of Mines Open-File Report 10-87, 33 quadrangle overlays.

Reference (Deposit): U.S. Bureau of Mines, 1973, Alaska 1:250,000-scale quadrangle map overlays showing mineral deposit locations, principal minerals, and number and type of claims: U.S. Bureau of Mines Open-File Report 20-73, 95 overlays (updated in 1986, 1987).

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