Katey Jo-Sox Prospects, Melozitna Mining District, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Katey Jo-Sox Prospects	Group of Prospects
Melozitna Mining District	Mining District
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

The Katey Jo-Sox prospect is on land selected by or conveyed to Doyon, Ltd. For further information, contact Doyon, Ltd., at 1 Doyon Place, Suite 300, Fairbanks, Alaska, 99701-2941.
Location: This site represents about a square-mile area of lode prospects. For this record, the site of the Katey Jo-Sox prospect is at an elevation of about 1,350 feet on an unnamed south tributary of Bear Creek, in the northeast quarter of section 31, T. 7 N., R. 18 W., of the Fairbanks Meridian.
Geology: The country rocks in this prospect area consist of Paleozoic(?) carbonate strata that are intruded by Cretaceous or Tertiary quartz monzonite stocks (Chapman and others, 1982). Contact-metamorphic (skarn) deposits have formed along portions of the intrusion contacts. The Katey Jo-Sox prospect consists of two tungsten skarn deposits. They were found by WGM, Inc., in 1978, at two locations in the Bear Creek drainage along the contacts of two small granitic stocks about 1 mile apart (Placer Dome, 1989). Scheelite-bearing skarn occurs for 1800 feet along the contact of the western stock, and for 4,000 feet along the contact of the eastern stock. Subsequent drilling by Union Carbide Corporation showed values of up to 0.5 percent tungsten, but the company considered the deposits to be uneconomic at that time (North Star Exploration, Inc., 1999 [Report 99-34]). These deposits also have been explored by mapping, geochemical(?), and magnetic surveys. In addition to tungsten, tin and gold geochemical(?) anomalies have also been identified (Placer Dome, 1989).
Workings: The Katey Jo-Sox tungsten skarn deposits were found by WGM, Inc., in 1978, at two locations in the Bear Creek drainage along the contacts of two small granitic stocks about 1 mile apart (Placer Dome, 1989). Scheelite-bearing skarn occurs for 1800 feet along the contact of the western stock, and for 4,000 feet along the contact of the eastern stock. Subsequent drilling by Union Carbide Corporation showed values of up to 0.5 percent tungsten, but the company considered the deposits to be uneconomic at that time (North Star Exploration, Inc., 1999 [Report 99-34]). These deposits also have been explored by mapping, geochemical(?), and magnetic surveys. In addition to tungsten, tin and gold geochemical(?) anomalies have also been identified (Placer Dome, 1989).
Age: Cretaceous or Tertiary, inferred from the presumed age of the granitic stocks.
Alteration: Contact metamorphism of carbonate strata at granitic contacts.

Commodities (Major) - W; (Minor) - Au, Sn
Development Status: None
Deposit Model: W-skarn deposit (Cox and Singer, 1986; model 14a).

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Link to USGS - Alaska:	TN031

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References