Unnamed Occurrence (ARDF - EA064; north of Montana Creek), Southeast Fairbanks Census Area, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - EA064; north of Montana Creek)	- not defined -
Southeast Fairbanks Census Area	Census Area
Alaska	State
USA	Country

Location: This occurrence is on a ridgeline at an elevation of 4,100 feet about 2.8 miles northwest of the junction of Montana Creek and Hutchinson Creek. The occurrence is in section 34, T. 6 S., R. 27 E., of the Fairbanks Meridian. The location is accurate.
Geology: The rocks in the vicinity of this occurrence are Paleozoic amphibolite-facies metamorphic rocks that are cut by high-angle faults and intruded by bimodal hypabyssal Tertiary felsic rocks, basalt, and gabbro (Foster, 1976; M.B. Werdon, unpub. mapping, 2000). The Tertiary igneous rocks have a distinctive geophysical signature as seen in airborne survey data (Alaska Division of Geological and Geophysical Surveys and others, 1999). The felsic volcanic rocks are rhyolitic to dacitic and are quartz and (or) feldspar porphyritic. A small, 1-foot-deep trench was dug at some unknown date in an area of quartz-veined felsic igneous rocks. Volcanic rocks cut and brecciated by milky, vuggy, crystalline, hydrothermal quartz contain as much as 85 ppb gold and 7.6 ppm silver (Werdon and others, 2000).
Workings: A small, 1-foot-deep trench was dug at an unknown date in an area of quartz-veined felsic igneous rocks. Samples from the trench was assayed by geologists from the Alaska Division of Geological and Geophysical Surveys in 2000 (Werdon and others, 2000).
Age: Tertiary.

Commodities (Major) - Au
Development Status: None
Deposit Model: Possibly epithermal veins? (Cox and Singer, 1986; model 25c?).

Other Databases

Link to USGS - Alaska:	EA064

Other Regions, Features and Areas containing this locality

References