Kwiniuk River, Kwiniuk River Showing

Showing with commodities copper, rare earth elements, tungsten

More information at and near this site: REE-AK00123

About this location

Feature ID REE-Mo00602
Geographic coordinates -162.358608, 64.728288
Point definition Point placed at the sample location for Kwiniuk River from Figure 1 Geologic Map of The Southern And Eastern Part Of The Darby Mountains, Seward Peninsula, Alaska
Reference West (1953); Plate 1
Date: 1953; Scale: Medium (1:24,000-1:250,000)

Geologic information

Commodities copper; rare earth elements; tungsten
Valuable materials allanite; apatite; chalcopyrite; powellite; pyrite; scheelite; zircon (1)
Associated materials hornblende; sphene; garnet; hematite; magnetite; epidote (1); olivine; thorianite (1); garnet; rutile; spinel
Mineralization style skarns; veins; disseminated
Age of mineralization Mid-Cretaceous
Host rock age 88.3+/- 1.5 Ma
Host unit name Darby Pluton
Host lithologies quartz monzonite; syenite (1); alkaline dikes; granodiorite; granite
Alteration contact metamorphism
Reference West, W.S., 1953, Reconnaissance for radioactive deposits in the Darby Mountains, Seward Peninsula, Alaska, 1948: U.S. Geological Survey Circular 300, 7 p.
Additional references (1) Barker (2016); Ages from Berry and others (1976)

Descriptions from sources

Site

“This occurrence is at about 175 feet elevation on a north tributary to the Kwiniuk River. The Kwiniuk River crosses a large belt of granite about halfway to its headwaters (pl. 1). The mouth of this tributary is 1.6 miles downstream from the confluence of Kwiniuk River and a major south tributary that is unnamed on the current USGS topographic map, but is identified as Corral Creek by West (1953, Plate 1). This is locality 134 of Cobb (1972, MF 445; 1978, OF 78-181). The area is accessible from Nome, approximately 70 miles to the west, by air to two small airstrips, one located at Golovin on the western side of the Darby Peninsula and the other at White Mountain on the Fish River (outside of area shown on pi. 1) and the Moses Point Civil Aeronautics Authority airfield near the mouth of the Kwiniuk River, 46 miles northeast of Golovin. There are no good harbors along the entire coast. Transportation of supplies within the area must be accomplished by tractor or in part by small boats, as there are no roads.

West, W.S., 1953, Reconnaissance for radioactive deposits in the Darby Mountains, Seward Peninsula, Alaska, 1948: U.S. Geological Survey Circular 300, 7 p.

Deposit models and geoenvironmental models

Type Model Reference
Deposit model unclassified
Geoenvironmental model unclassified

Geographic context based on the point coordinates