Womens Bay (ARDF #KD016) Ag, Au, Cu, Pb, Zn

Womens Bay

Prospect, Inactive

Alternative names

Shakmanof

Commodities and mineralogy

Main commodities	Ag; Au; Cu; Pb; Zn
Ore minerals	arsenopyrite; chalcopyrite; galena; gold; pyrite; pyrrhotite; sphalerite; stibnite
Gangue minerals	quartz

Geographic location

Quadrangle map, 1:250,000-scale	KD
Quadrangle map, 1:63,360-scale	D-2
Latitude	57.91
Longitude	-152.61
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This prospect is located on the east side of Kizhuyak Bay approximately 1/2 mile southwest of Shakmanof Bay in sec. 24, T. 26 S., R. 21 W., of the Seward Meridian (Berg and Cobb, 1967, figure 15, locality 7; Rose and Richter, 1967, figure 1, locality 9; Cobb, 1972, MF 460, locality 17; McGee, 1972, locality 3; MacKevett and Holloway, 1977, locality 15). Site location is accurate to within 1/2 mile.

Geologic setting

Geologic description This prospect, first staked in 1906, consists of a quartz vein that cuts Tertiary granodiorite and strikes N. 60 W. and dips 75 southwest. The vein ranges in thickness from 12 to 14 feet and is said to be traceable for 1800 feet The bulk of the vein is milky white quartz and shows little mineralization. A later introduction of sulfide-bearing quartz resulted in a zone of nearly massive sulfides up to 18 inches in thickness. This zone narrowed down to 4 to 6 inches within a short distance along strike. Assays of the sulfide taken several years previous to Capps' visit in 1934 are said to have averaged $2 to $3 per ton ($20 gold?) while those taken later averaged $8.40 per ton ($35 gold?). One assay of the sulfides made by the USGS gave a value of 1.19 ounces per ton silver and no gold (Capps, 1937, p. 130) Roehm (1936, PE 131-2) described what appears to be the same prospect, however he called it the Ouzinkie Group. He described the prospect as a large banded quartz vein striking N. 40 W. and dipping 80 southwest. The vein was exposed for a length of 900 feet and traceable for 3000 feet and averaged 14 to 17 feet in thickness. The lens of nearly massive sulfides was up to 3 feet in thickness and could be traced for 200 feet along strike. Of 8 samples collected by Roehm the best assays were 0.36 ounce per ton gold and 2.20 ounces per ton silver over 26 inches.
Geologic map unit	(-152.612190411571, 57.9092660429354)
Mineral deposit model	Polymetallic vein; Chugach-type low sulfide gold-quartz vein (Cox and Singer, 1986; model 22c; Bliss, 1992; model 36a.1).
Mineral deposit model number	22c, 36a.1
Age of mineralization	Tertiary
Alteration of deposit	Sericite and muscovite alteration in granodiorite wallrock.

Production and reserves

Workings or exploration	Shortly after this prospect was staked in 1906 it was developed by a 22-foot shaft and 152-foot adit. Assays taken several years previous to 1934 are said to have run $2 to $3 per ton in gold while those taken since 1934 averaged $8.40 per ton. A USGS sample assayed 1.19 ounces per ton silver and no gold. Roehm's best assay was 0.36 ounce per ton gold and 2.20 ounces per ton silver over 26 inches.
Indication of production	None
Additional comments Site is on land conveyed to the Koniag Corporation.

References

MRDS Number	A015104
References Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p. Capps, S.R., 1937, Kodiak and adjacent islands, in Smith, P.S. and others, Mineral resources of Alaska, report on progress of investiagtions in 1935: U.S. Geological Survey Bulletin 880-C, p. 111-184, 1 plate, scale 1:250,000. Cobb, E.H., 1972, Metallic mineral resources map of the Kodiak quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-460, 1 map sheet, scale 1:250,000. Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Afognak, Karluk, Kodiak, and Trinity Islands quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-860, 49 p. MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000. McGee, D.L., 1972, Kodiak Island and vicinity, Alaska: Geology and mineral resources: Alaska Division of Geological & Geophysical Surveys Alaska Open-File Report 31, 7 p., 1 sheet, scale 1:250,000. Roehm, J.C., 1936, Preliminary report of Ouzinkie Group, Kodiak Mining District, Kodiak Island, Alaska: Alaska Territorial Department of Mines Prospect Evaluation 131-2, 4 p. (1 sheet, scale 1 inch=100 feet). Rose, A.W., and Richter, D.H., 1967, Geology and stream sediment geochemistry of Anton Larsen Bay and vicinity, Kodiak Island, Alaska: Alaska Division of Mines and Minerals Geologic Report 31, 10 p., 1 sheet, scale 1:63,360.
Reporters	S.H. Pilcher (Anchorage)
Last report date	10/2/1998