Unnamed Occurrence (ARDF - ID174; upper Little Eldorado Creek), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - ID174; upper Little Eldorado Creek)	- not defined -
Iditarod Mining District	Mining District
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

Location: This occurrence is at an elevation of about 1,100 feet on top of a small ridge that separates the two headwater tributaries of Little Eldorado Creek. The occurrence is about 1.2 mile south of hill 1132 and 0.3 mile southeast of the center of section 8, T. 24 N., R. 47 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence consists of an iron stained, sericitized zone in a granite porphyry plug which intrudes sandstone of the Upper Cretaceous, Kuskokwim Group (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The altered zone is of uncertain size and orientation. One sample of mineralization contained 50 parts per billion (ppb) gold and 1,300 ppb mercury (McGimsey and others, 1988).
Workings: Samples were collected by the U.S. Geological Survey and Alaska Division of Geological and Geophysical Surveys in 1986 (McGimsey and others, 1988).
Alteration: Sericitic alteration of granite porphyry; iron oxide staining.

Commodities (Major) - Au; (Minor) - Hg
Development Status: None

Other Databases

Link to USGS - Alaska:	ID174

Other Regions, Features and Areas containing this locality

References