Unnamed (southeast of Canyon Creek) (ARDF #TN010) Mn, Zn

Unnamed (southeast of Canyon Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities	Mn; Zn
Other commodities	Cd

Geographic location

Quadrangle map, 1:250,000-scale	TN
Quadrangle map, 1:63,360-scale	C-3
Latitude	65.50518
Longitude	-151.0158
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This record represents an anomalous rock sample collected on a ridge at about 2,000 feet elevation, south and east of Canyon Creek. The site is Alaska Division of Geological and Geophysical Surveys (ADGGS) sample station 92MW459 (Solie and others, 1993), 0.45 mile east of the center of section 22, T. 8 N., R. 17 W., of the Fairbanks Meridian. The location is accurate within 1000 feet.

Geologic setting

Geologic description Bedrock at this occurrence consists of Paleozoic limestone, dolomite, greenstone, and chert, bordered to the south by schist, quartzite, phyllite, and slate (Chapman and others, 1982). The rocks are structurally complex and regionally metamorphosed to greenschist grade. The site is on the axis of a northeast-trending antiform. In 1992, the Alaska Division of Geological and Geophysical Surveys (ADGGS) investigated this area as part of a mineral resource evaluation of State-selected lands (Solie and others, 1993). The sample collected at this site is described as a black metallic mineral filling fractures in quartzite. The sample contained 25 parts per million (ppm) bismuth, 16.5 ppm cadmium, 20,000 ppm manganese, 22 ppm molybdenum, and 1,117 ppm zinc. Samples (at stations 92Ha260, 92RE2039, and 92Ha261) of quartz veins in phyllite and schist in a three mile area around this occurrence did not contain anomalous metal values.
Geologic map unit	(-151.018343291482, 65.5046871151294)

Geologic description

Bedrock at this occurrence consists of Paleozoic limestone, dolomite, greenstone, and chert, bordered to the south by schist, quartzite, phyllite, and slate (Chapman and others, 1982). The rocks are structurally complex and regionally metamorphosed to greenschist grade. The site is on the axis of a northeast-trending antiform.

In 1992, the Alaska Division of Geological and Geophysical Surveys (ADGGS) investigated this area as part of a mineral resource evaluation of State-selected lands (Solie and others, 1993). The sample collected at this site is described as a black metallic mineral filling fractures in quartzite. The sample contained 25 parts per million (ppm) bismuth, 16.5 ppm cadmium, 20,000 ppm manganese, 22 ppm molybdenum, and 1,117 ppm zinc. Samples (at stations 92Ha260, 92RE2039, and 92Ha261) of quartz veins in phyllite and schist in a three mile area around this occurrence did not contain anomalous metal values.

Geologic map unit

(-151.018343291482, 65.5046871151294)

Production and reserves

Workings or exploration	In 1992, the Alaska Division of Geological and Geophysical Surveys (ADGGS) investigated this area as part of a mineral resource evaluation of State-selected lands (Solie and others, 1993). The sample collected at this site is described as a black metallic mineral filling fractures in quartzite. The sample contained 25 parts per million (ppm) bismuth, 16.5 ppm cadmium, 20,000 ppm manganese, 22 ppm molybdenum, and 1,117 ppm zinc. Samples (at stations 92Ha260, 92RE2039, and 92Ha261) of quartz veins in phyllite and schist in a three mile area around this occurrence did not contain anomalous metal values.
Indication of production	None

Workings or exploration

Indication of production

None

References

References Chapman, R.M., Yeend, W.E., Brosge, W.P., and Reiser, H.N., 1982, Reconnaissance geologic map of the Tanana quadrangle: U.S. Geological Survey Open-File Report 82-734, 20 p., scale 1:250,000 Solie, D.N., Wiltse, M.A., Harris, E.E., and Roe, J.T., 1993, Land selection unit 34 (Bettles & Tanana quadrangles): References, DGGS sample locations, geochemical and major oxide data: Alaska Division of Geological and Geophysical Surveys Public Data File 93-34, 41 pages, 1 sheet, scale 1:250,000.
Reporters	D.J. Szumigala (ADGGS)
Last report date	4/16/2004