Unnamed Prospect (ARDF - CR014), Noyes Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi

Regional Level Types
Unnamed Prospect (ARDF - CR014)	- not defined -
Noyes Island	Island
Ketchikan Mining District	Mining District
Prince of Wales-Hyder Census Area	Census Area
Alaska	State
USA	Country

Location: The location of the camp for this diamond drilling site is at an elevation of about 100 feet on the west side of the small creek on the north end of Noyes Island, in the SW1/4 section 10, T. 73 S., R. 77 E. The location of the actual drilling is unknown; it is perhaps on the ridge west of the camp.
Geology: The remains of a small drilling camp tucked into the timber on the east side of a small creek on the north end of Noyes Island was pointed out to D.J. Grybeck by Ken Eichner (D.J. Grybeck, unpublished field notes, 1984). The area was already overgrown and it was barely possible to land at an old helicopter pad nearby. The camp was said to date from the early 1970's. A pile of about 20 core boxes remained at the camp, each with about 10 feet of thin core. The core was thoroughly mixed up and the boxes had largely disintegrated. The numbering system suggests at least 6 holes. Most of core consists of hornfelsed meta-andesite with sparse to moderate amount of pyrrhotite and some chalcopyrite as disseminated grains, in thin quartz veins, and along fractures. The core included a substantial amount of moderately to weakly altered, quartz monzonite with notably large sericite grains along fractures, and sparse disseminated pyrite. Four typical samples of the mineralized quartz monzonite and meta-andesite from the core pile contained 150-300 parts per million (ppm) copper; two contained 5-15 ppm molybdenum, and all contained less than 0.05 ppm gold. The location of the drill sites is unknown but there is a large, vividly orange-stained zone across the creek to the west that is exposed in a landslide and several similar patches can be seen scattered through the timber. The drill sites may be in this area.
Workings: Possibly six holes were diamond drilled in the early 1970's.
Age: Probably Cretaceous based on the age of most of the small granitic plutons nearby (Eberlein and others, 1983; Brew, 1996).
Alteration: Hornfelsing of meta-andesite and moderate sericitic alteration of quartz monzonite.

Commodities (Major) - Cu, Mo
Development Status: None
Deposit Model: Porphyry copper or porphyry molybdenum.

Other Databases

Link to USGS - Alaska:	CR014

Other Regions, Features and Areas containing this locality

References