Unnamed Occurrence (ARDF - CH036; south of the north fork of the East Fork Chandalar River), Chandalar Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
67° 40' 48'' North , 147° 3' 0'' West
Latitude & Longitude (decimal):
Köppen climate type:
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).
Location: This occurrence is at an elevation of about 3,200 ft, approximately 15 miles northeast of the east end of Ackerman Lake and 3 miles south of the north fork of the East Fork Chandalar River near the eastern boundary of the Chandalar quadrangle (secs. 15 and 22, T. 33 N., R. 3 W., of the Fairbanks Meridian). The reference point is near the center of a large northeast-southwest-trending claim block which extends 2 to 3 miles in both directions from the reference point. This occurrence is listed in DeYoung (1978) as North Fork East Fork Chandalar River (loc. 52) and in Maas (1987, OFR 10-87 (location 29) as Chandalar River NFEF. See additional comments for further information. The location is accurate within a 1-mile radius.
Geology: 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 (Brosg
Workings: 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.
Commodities (Major) - Cu, Zn
Development Status: None
Commodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.List of minerals for each chemical element
Other Databases
| Link to USGS - Alaska: | CH036 |
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Other Regions, Features and Areas containing this locality
North AmericaContinent
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainVolcanic Arc
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