|Quadrangle map, 1:250,000-scale||PE|
|Quadrangle map, 1:63,360-scale||D-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This is a well known location that is about 1.5 miles upstream from the mouth of Taylor Creek in upper Duncan Canal. It is about 0.4 mile southeast of the center of section 36, T. 59 S., R. 76 E. The location is accurate.|
The Taylor Creek deposit has been known since 1903 or 1904 (Wright and Wright, 1908; Kerns, 1950) and has been examined numerous times by government and industry. There was considerable activity during the 1940s, mainly restricted to surface sampling and some trenching and pitting (Fowler, 1948 [DGGS IR 195-2]; Fowler, 1948 [DGGS IR 117-5]; Roehm, 1946 [DGGS IR 195-41]; and Roehm, 1946 [DGGS IR 117-4]). The property has been been intermittently active since. Kerns (1950) reported on extensive diamond drilling carried out by the U. S. Bureau of Mines in 1948 and the 14 trenches they dug on several areas of mineralization. In 1997, Kennecott Exploration Company staked a large block of claims that included the deposit.
The deposit consists of Irregular masses and disseminated grains of galena, sphalerite, pyrite, and chalcopyrite in dolomitic limestone (Kerns, 1950). In the best exposures along Taylor Creek, pervasively disseminated pyrite, galena, and sphalerite occur over an area about 3 meters wide by 7 meters long in a brecciated zone. This zone occurs in a thinly laminated to phyllitic, light-gray and white, fine-grained dolomitic marble which overlies green crenulated muscovite-chlorite-calcite schist. The mineralization persists for approximately 100 m along the southwest bank of Taylor Creek. Maximum assay values in drill cores and outcrop samples collected by Kerns (1950) were 4.3 percent zinc, 0.95 percent lead, and 1.2 ounces of silver per ton. Several origins for the deposit has been suggested. Newer work suggests that the deposit is certainly spatially and possibly genetically associated with the Duncan Canal-Zarembo belt of Triassic massive sulfide mineralization defined by Berg and Grybeck (1980), and Berg (1981). Recent geologic mapping by Karl and others (1999) indicate that the rocks at Taylor Creek are part of the Triassic Hyd Group.Still and others (2002) briefly examined the deposit and collected several samples. The best were: 1) a sample across 0.7 feet that contained 25.9 parts per million (ppm) silver, 7.72 percent lead, and 6.9 percent zinc; 2) a select sample that contained more than 500 ppm silver, 7,217 ppm lead, and 2.1 percent zinc, and 3) a grab sample of gossan that contained 903 parts per billion (ppb) gold, 160 ppm silver, 9.69 percent lead, and 3.0 percent zinc.
|Geologic map unit||(-133.365535580727, 56.7933606918062)|
|Mineral deposit model||Probably a (remobilized?) volcanogenic massive sulfide deposit based on a spatial relationship to other massive sulfide deposits in the Duncan-Zarembo belt of mineralization defined by Berg and Grybeck, 1980.|
|Age of mineralization||Triassic of younger based on the age of the host rock.|
|Workings or exploration||The Taylor Creek deposit has been known since 1903 or 1904 (Wright and Wright, 1908; Kerns, 1950) and has been examined numerous times by government and industry. Considerable activity during the 1940s, mainly restricted to surface sampling and some trenching and pitting (Fowler, 1948 [DGGS IR 195-2]; Fowler, 1948 [DGGS IR 117-5]; Roehm, 1946 [DGGS IR 195-41]; and Roehm, 1946 [DGGS IR 117-4]). The property has been been intermittently active since. Kerns (1950) reported on extensive diamond drilling carried out by the U.S. Bureau of Mines in 1948 and the 14 trenches they dug on several areas of mineralization. In 1997, Kennecott Exploration Co. staked a large block of claims that included the deposit.|
|Indication of production||None|
Berg, H.C., 1981, Upper Triassic volcanogenic massive sulfide metallogenic province identified in southeastern Alaska, in Albert, N.R.D., and Hudson, Travis, eds., The United States Geological Survey in Alaska--Accomplishments during 1979: U.S. Geological Survey Circular 823-B, p. B104-B108.
Berg, H.C., and Grybeck, Donald, 1980, Upper Triassic volcanogenic Zn-Pb-Ag (-Cu-Au) mineral deposits near Petersburg, Alaska: U.S. Geological Survey Open-File Report 80-527, 11 p., 1 sheet.
Cobb, E.H., 1972, Metallic mineral resources map of the Petersburg quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-415, 1 sheet, scale 1:250,000.
Cobb, E. H., 1972, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Petersburg Quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-870, 53 p.
Fowler, H.M., 1948, Report of investigations in the Petersburg-Ketchikan mining precincts: Alaska Territorial Department of Mines Itinerary Report 195-2, 12 p.
Fowler, H.M., 1948, Taylor Creek lead-zinc prospect, Duncan Canal, Kupreanof Island, Alaska: Alaska Territorial Department of Mines Prospect Evaluation 117-5, 1 p.
Grybeck, D.J., Berg, H.C., and Karl, S.M., 1984, Map and description of the mineral deposits in the Petersburg and eastern Port Alexander quadrangles: U.S. Geological Survey Open-File Report 84-837, 86 p., 1 sheet, scale 1:250,000.
Karl, S.W., Haeussler, P.J., and McCafferty, A.E., 1999, Reconnaissance geologic map of the Duncan Canal-Zarembo Island area, southeastern Alaska: U.S. Geological Survey Open-File Report 99-0168, 30 p., 1 sheet, scale 1:150,000.
Kerns, W.H., 1950, Investigation of Taylor Creek lead-zinc deposit, Kupreanof Island, Petersburg, Alaska: U.S. Bureau of Mines Report of Investigations 4669, 13 p.
Roehm, J.C., 1946, Preliminary report on Taylor Creek lead-zinc property of Ora pp. Schoonover: Alaska Territorial Department of Mines Prospect Evaluation 117-4, 2 p.
Roehm, J.C., 1946, Report of Investigations and itinerary of J. C. Roehm in the Petersburg and Ketchikan mining precincts: Alaska Territorial Department of Mines Itinerary Report 195-41, 13 p.
Still, J.C., Bittenbender, P.E., Bean, K.W., and Gensler, E.G., 2002, Mineral assessment of the Stikine area, central Southeast Alaska: U.S. Bureau of Land Management Technical Report 51, 560 p.
|Reporters||D.J. Grybeck (Port Ludlow, WA)|
|Last report date||4/8/2007|