Joseph Creek Prospect, Rampart Mining District, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Joseph Creek Prospect	Prospect
Rampart Mining District	Mining District
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

Location: The Joseph Creek lode prospect is at an elevation of about 2,500 feet on the ridge at the head of Joseph Creek. The site is 0.2 mile north of hill 2815, in the southwest quarter of section 21, T. 5 N., R. 13 W., of the Fairbanks Meridian. The location is accurate within a mile. The site corresponds to location 8 of Cobb (1972, 1977), and roughly to the U.S. Bureau of Land Management site for Long Run (MAS number 0020480120).
Geology: The ridge between Granite and Minook creeks consists of Triassic to Permian conglomerate, argillite, sandstone, and shale (Reifenstuhl and others, 1998). This sequence is in thrust-fault contact with Cretaceous or Jurassic metasedimentary rocks to the south and with Paleozoic rocks to the north. A Cretaceous monzodiorite [stock] is exposed on Eureka Dome approximately 1.5 miles to the southeast (Reifenstuhl and others, 1998). Scattered float of partly oxidized stibnite occurs along the top of the ridge between Granite Creek and upper Minook Creek (Mertie, 1934). Shallow trenches failed to expose the bedrock source of the stibnite. Burand and Saunders (1966) mention reports of two stibnite prospects in the Minook Creek (TN054) area: one in the headwaters of Joseph Creek (TN128) and the other in the headwaters of Chapman Creek (TN070). Eberlein and others (1977) report that a visit by the U.S. Geological Survey in 1972 found several bright red and canary-yellow stained zones, but no signs of mining or diligent exploration. Resource Associates of Alaska (RAA) staked 28 mining claims over this area in 1979 (Alaska Kardex files). In 1979, an affidavit of annual labor stated that [RAA] did 300 feet of trenching to a depth of 2 feet to determine the depth of oxidation, and in 1980, they core drilled to determine the length and depth of mineralization (Alaska Kardex files).
Workings: Resource Associates of Alaska (RAA) staked 28 mining claims over this area in 1979 (Alaska Kardex files). In 1979, an affidavit of annual labor stated that [RAA] did 300 feet of trenching to a depth of 2 feet to determine the depth of oxidation, and in 1980, they core drilled to determine the length and depth of mineralization (Alaska Kardex files).

Commodities (Major) - Sb
Deposit Model: Simple Sb deposits (Cox and Singer, 1986; model 27d).

Other Databases

Link to USGS - Alaska:	TN128

Other Regions, Features and Areas containing this locality

References