Clearwater Barite Occurrence, Kantishna Mining District, Denali Borough, Alaska, USAi

Regional Level Types
Clearwater Barite Occurrence	Occurrence
Kantishna Mining District	Mining District
Denali Borough	Borough
Alaska	State
USA	Country

The occurrence is in Denali National Park and Preserve.
Location: The Clearwater barite occurrence is exposed on the west bank of the Clearwater River about one mile north of the mouth of Stampede Creek. It is in the NE1/4SW1/4 section 19, T. 13 S., R. 14 W., Fairbanks Meridian. The location is probably accurate within 1000 feet. The occurrence corresponds to number 67 of Bundtzen, Smith, and Tosdal (1976), 149 of Hawley and Associates (1978), 75 of Bundtzen (1981), and 113 of Thornsberry, McKee, and Salisbury (1984).
Geology: The Clearwater Barite occurrence is probably in quartzite and mica-quartz schist of the Birch Creek Schist, possibly on or close to a projection of the Stampede fault (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-1). The occurrence is a vein in a fault zone. The vein strikes about N50W and dips 40SW (Thornsberry, McKee, and Salisbury, 1984, v. 2, occurrence 113). It is about 6 feet thick and consists of quartz, barite, pyrite, pyrrhotite, and possibly a trace of sphalerite. Bundtzen (1981) estimated about 25 percent barite in one sample, which also contained a trace of gold and 0.017 percent zinc.
Workings: Minor excavation.
Age: Assuming that the vein is distal to the precious- and base-metal deposits of the Kantishna area, it probably is Eocene (see record MM091).

Commodities (Major) - Ba; (Minor) - Zn
Development Status: None
Deposit Model: Quartz-barite vein.

Other Databases

Link to USGS - Alaska:	MM015

Other Regions, Features and Areas containing this locality

References