Reynolds-Alaska Occurrence, Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi

Regional Level Types
Reynolds-Alaska Occurrence	Occurrence
Prince William Sound Mining District	Mining District
Valdez-Cordova Census Area	Census Area
Alaska	State
USA	Country

There are two prospects owned by Chugach Alaska Corporation with the same name as this occurrence; one is located near Landlocked Bay in the Valdez quadrangle, and the other is located near Humpy Cove in the Blying Sound quadrangle.
Location: The occurrence is located 1 mile east of Horseshoe Bay on Latouche Island, at an elevation of about 500 feet. It is in the NE1/4 section 17, T. 2 S., R. 9 E., of the Seward Meridian. This is location 260 of Tysdal (1978 [MF-880-A]) and location S-2 of Jansons and others (1984). This location is accurate to within a quarter of a mile.
Geology: Bedrock in the area consists of northeast-striking, west-dipping interbedded shale and graywacke of the Orca Group of early Teriary age (Kurtak and Jeske, 1986). The occurrence is along the northwest limb of a shallowly northeast-plunging antiform (Stejer, 1956). The sulfide occurrences in the vicinity of Horseshoe Bay consist of tabular lenses of massive and disseminated sulfides that conform to the stratification of the enclosing bedrock (Stejer, 1956). The ore mineralogy is fairly simple, consisting of pyrite, chalcopyrite, cubanite, sphalerite, and pyrrhotite; gangue minerals consist of quartz, calcite,and epidote (Stejer, 1956). Assay results indicate that small amounts of gold and silver are also present (Stejer, 1956).
Workings: Grant and Higgins (1909) showed the occurrence as a map location, but no description was given. There are no reported assays or workings.
Age: Tertiary or younger; the mineralization is in rocks of the Orca Group of Tertiary age.
Alteration: There is strong asymmetric sericite-chlorite alteration associated with the massive sulfide mineralization (Rogers and Hoyt, 1999).

Commodities (Major) - Cu
Development Status: None
Deposit Model: Besshi massive sulfide (Cox and Singer, 1986; model 24b)

Other Databases

Link to USGS - Alaska:	SR300

Other Regions, Features and Areas containing this locality

References