1. Mineral Resources
  2. Online Spatial Data
  3. Alaska Resource Data File (ARDF)

Unnamed (northeast ridge of Caribou Mountain)

Occurrence, Inactive

Map
KML
XML
GeoJSON

Commodities and mineralogy

Main commodities Mo
Other commodities Bi; Pb
Ore minerals molybdenite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale HU
Quadrangle map, 1:63,360-scale A-6
Latitude 66.1997
Longitude -155.8716
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 2,200 on the northeast ridge of Caribou Mountain, about 2.8 miles northeast of the summit. The location is accurate within one-half mile.

Geologic setting

Geologic description

This occurrence consists of a molybdenite(?)-bearing quartz vein (Miller and Ferrians, 1968). A grab sample of the vein contains 200 ppm molybdenum, 100 ppm lead, and 3,000 ppb bismuth. The rocks in the area are Cretaceous porphyritic monzonite and quartz monzonite. No other information is available. Stream-sediment samples from creeks draining the intrusive contact in this area are anomalous in lead and copper (Miller and Ferrians, 1968).
Geologic map unit (-155.874253027059, 66.1991377282286)
Mineral deposit model Porphyry Cu-Au? (Cox and Singer, 1986; model 20c?).
Mineral deposit model number 20c?
Age of mineralization The Zane Hills pluton is 81 Ma as dated by K/Ar methods (Miller and others, 1966).

Production and reserves

Workings or exploration Only surface sampling.
Indication of production None

References

References

Grybeck, Donald, 1977, Map showing known mineral deposits of the Brooks Range, Alaska: U.S. Geological Survey Open-File Report 77-166-C, 45 p., 1 sheet, scale 1:1,000,000.
Miller, T.P., and Ferrians, O.J., Jr., 1968, Suggested areas for prospecting in the central Koyukuk River region, Alaska: U.S. Geological Survey Circular 570, 12 p.
Reporters J.M. Britton (Anchorage)
Last report date 8/1/2002