Prospect, Active

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale NM
Quadrangle map, 1:63,360-scale D-1
Latitude 64.795
Longitude -165.3637
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Jackpot prospect is in the eastern headwaters of Boulder Creek, a south tributary to Stewart River. It is in section 16, T. 8 S., R. 33 W., Kateel River Meridian. Alaska State mining claims cover all but the NW1/4NW1/4 of section 16; Jack Gulch is in the southwest quarter of the section. The location is approximate, taken as the center of section 16.

Geologic setting

Geologic description

The Jackpot claims were located by following up anomalous concentrations of gold, arsenic, and other metals in stream sediments (Daniel Lajack, written communication, 1999). The Jackpot claim block is bisected by a strong fault that strikes northeast; it appears to be a splay of the Penny River fault, an important regional structure that is locally mineralized (Bundtzen and others, 1994). On the Jackpot claims, rocks north of the fault are mainly massive marble, but include a possible layered rhyolitic or granitic unit. Rocks on the south side of the fault are feldspathic, epidote-bearing schist that is probably part of, or transitional into a mafic metavolcanic assemblage derived from Ordovician protoliths (Till and Dumoulin, 1994).
Geologic map unit (-165.366323120101, 64.7942398745065)
Mineral deposit model Disseminated and stratabound in metamorphic rocks, or in low sulfide Au-quartz veins (Cox and Singer, 1986; model 36a).
Mineral deposit model number 36a?

Production and reserves

Workings or exploration Surface observation and possibly some sampling has been done here.
Indication of production None



Till, A.B., and Dumoulin, J.A, 1994, Geology of Seward Peninsula and St. Lawrence Island, in Plafker, G., and Berg, H.C., eds., The Geology of Alaska: Geological Society of America, DNAG, The Geology of North America, v. G-1, p. 141-152.
Reporters C.C. Hawley and Travis L. Hudson
Last report date 10/22/1999