Unnamed Occurrence (ARDF - SK004; near Battery Point on the Chilkat Peninsula), Haines, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - SK004; near Battery Point on the Chilkat Peninsula)	- not defined -
Haines	City Borough
Alaska	State
USA	Country

This occurrence is within the Chilkat State Park.
Location: This occurrence is at an elevation of approximately 300 feet on the east side of the the Chilkat Peninsula about 0.5 miles south of Battery Point. It corresponds to location 19 of Cobb (1972 [MF 424]); sample site BD473 of Winkler and MacKevett, (1970); and number 38 of Still and others (1991).
Geology: Winkler and MacKevett (1970) describe a sample from this occurrence as a, 'Chalcopyrite-epidote-rich greenstone/amphibolite (?),' which contains 300 ppm Cu. Still (1988) says this occurrence is, 'where a 100-foot-high metabasalt cliff has a few patches of malachite stain.' Samples contained up to 0.51 ppm gold and 2,650 ppm copper. Plafker, Hudson, and Silberling (1979) and Plafker and Hudson (1980) note that metabasalts on the Chilkat Peninsula are vesicular and/or amygdaloidal and that well-developed pillow textures are locally present. Based in part on fossil evidence that supports a Late Triassic (Karnian) age, they suggest that the metavolcanics and carbonates may correlate with similar rocks of the Wrangellia terrane. This site is located near an ultramafic body which is probably 108-109 m.y. old based on potassium-argon ages reported by MacKevett and others (1974) for pyroxenite at Battery Point . The age of the mineralization is not well established, but can be no older than the Late Triassic age of the host rocks. It may be related to the ultramafic body whose age is 108-109 m.y.
Age: The age of the mineralization is not well established. It can be no older than the Late Triassic age of the host rocks and may be related to the 108-109 m.y. old ultramafic body nearby.
Alteration: Epidotization.

Commodities (Major) - Cu; (Minor) - Au
Development Status: No
Deposit Model: There is little information for assigning a deposit model. The mineralization m

Other Databases

Link to USGS - Alaska:	SK004

Other Regions, Features and Areas containing this locality

References