Smucker Prospect (Charlie; Patti; Puzzle; Ambler 4-B), Kiana Mining District, Northwest Arctic Borough, Alaska, USAi

Regional Level Types
Smucker Prospect (Charlie; Patti; Puzzle; Ambler 4-B)	Prospect
Kiana Mining District	Mining District
Northwest Arctic Borough	Borough
Alaska	State
USA	Country

Excellent example of stratiform volcanogenic sulfide deposit typical of the Ambler sequence in the southern Brooks Range. This is the westernmost known occurrence of this type deposit in the southern Brooks Range. All available data suggest Smucker to be relatively significant in size (Hitzman and others, 1986)
Location: Located on ridge east of VABM Sleet in T. 22 N., R. 8 E., Kateel River Meridian. Accurately located to within 300 ft. (100 m) and shown as locality 36 in Mayfield and Grybeck (1978).
Geology: Layered sulfide zone 9 ft to 27 ft. (3 m to 9 m) thick, continous for at least 6000 ft (2000 m) along strike, consists of banded, fine to medium grained pyrite, sphalerite, galena, chalcopyrite and minor owyheeite in a silica-calcite-pyrite matrix. The country rocks are characteristic of the Devonian-Mississippian Ambler sequence and consist dominantly of well-foliated porphyroblastic quartz-feldspar-muscovite-chlorite schist interlayered with quartz-muscovite-chlorite phyllite, graphitic phyllite, calcite-mica schist and marble. Mineralized zone is repeated by complex folding (Nana Development Corp., written commun., 1997)
Workings: Surface geologic mapping, geochemical sampling (soil grids), electromagnetic measurements, magnetometer measurements, and eight drill holes by 1984 (Nana Development Corp., written commun., 1997). According to Mayfield and Grybeck (1978) two drill samples 2400 ft (820 m) apart intersected layered sulfide zones 9 ft. to 27 ft. (3 m to 9 m) thick assaying 100 g/ton Ag, 2-8% Zn and 1-1.6% Pb. Grades from drill samples indicated 3.8% Zn, 1.2 to 1.6% Pb, 69-514 g/ton Ag.
Age: Devonian
Alteration: No hydrothermal alteration of wall rock evident.
Reserves: Hitzman and others (1986) report greater than eight million metric tons grading 0.8% Cu, 6.8% Zn, 2.3% Pb, 200 g/ton Ag. Bundzten (1996) reported 'significant' tonnage grading 1.5% Pb, 5%-10% Zn, 103-343 g/ton Ag, and minor Au.

Commodities (Major) - Ag, Cu, Pb, Zn ; (Minor) - Au
Development Status: No
Deposit Model: Kuroko

Other Databases

Link to USGS - Alaska:	AR033

Other Regions, Features and Areas containing this locality

References