1983 Mineral Resource Studies: Kantishna Hills and Dunkle Mine Areas, Denali National Park and Preserve, Alaska. Volume I. Text.
In 1983, mineral resource studies were conducted in the Kantishna Hills and Dunkle Mine study areas of the Denali National Park and Preserve, AK. Fieldwork included geologic mapping, geochemical and geophysical surveys, placer studies, and drilling. The Kantishna Hills area contains an estimated 688,000 oz of placer gold in 43 million cubic yards of gravels. Lode mineralization appears to be principally related to the Spruce Creek sequence of metamorphosed- and volcano-sedimentary deposits that contain modest reserves of antimony, gold, silver, lead, and zinc in vein and stratiform deposits. The area also contains black shale and volcanic environments exhibiting newly identified evidence of stratabound base- and precious-metal mineralization. Mineralization of the Dunkle Mine study area appears to be related to an igneous complex and two regional structural zones hosted by sedimentary, metasedimentary, and metavolcanic rocks. Up to 350,000 tons of coal may be present in Tertiary sedimentary deposits. Production from the Kantishna Hills study areas through 1983 totaled 85,000 oz gold, 265,000 oz silver, 540,000 lb lead, and 4,400,000 lb antimony. The Dunkle Mine area has produced approximately 64,000 tons of coal.