Geochemical major-oxide, minor-oxide, trace-element, and rare-earth-element data from rocks and streams sediments collected in 2012 in the Ray Mountains area, Beaver, Bettles, Livengood, and Tanana quadrangles, Alaska

Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a helicopter-supported geological and geochemical resource assessment project in the Beaver, Bettles, Livengood, and Tanana quadrangles from June 23 through August 5, 2012. The objectives of DGGS's resource assessment are to improve the trace-element geochemical coverage of selected watersheds; to obtain modern, quantitative geochemical analyses; to understand the petrogenesis of the granites; and to better document established mineral occurrences. Stream-sediment, pan-concentrate, and rock sampling were conducted as part of the State's Rare Earth Elements and Strategic Minerals Assessment project, which is designed to evaluate Alaska's potential for these resources. Highlights of this sampling project include documenting patterns of variable REE enrichment in the granites, and identifying bedrock samples of greisen and oxidized breccias with enriched REE, and stream sediments with enriched REEs that have a pattern of variation that mimics that of the granites.

Tags: aluminum, angayucham terrane, angayucham thrust, antimony, arsenic, augen gneiss, barium, basalt, base metals, batholith, beaver quadrangle, bedrock, beryllium, bettles quadrangle, bismuth, bonanza creek, bonanza pluton, cadmium, calcium, caribou mountain, cerium, cesium, chalcopyrite, chlorite, chromium, coal creek, coal creek pluton, cobalt, copper, cretaceous, critical minerals, dall river, dalton highway, devonian, dysprosium, economic geology, erbium, europium, exploration, felsic, fish creek, fleshlanana creek, fluorine, fort hamlin hills, fort hamlin hills pluton, gadolinium, galena, gallium, geochemical data, geochemical surveys, geochemistry, geology, germanium, gishna creek, gneiss, gobblers knob, gold, granite, greisen, hafnium, halu creek, heavy metals, hodzana pluton, holmium, hornfels, hot springs pluton, igneous rocks, iron, ishtalitna creek, kanuti hot springs, kanuti kilolitna river, kanuti pluton, kanuti river, kilo hot springs, koyuk mining district, lanthanide elements, lanthanum, livengood quadrangle, lode, lower ray hot springs, lutetium, magnesium, major oxides, manganese, mcquesten creek, mesozoic, metabasite, metals, metamorphic rocks, metasedimentary rocks, metavolcanic rocks, mineral assessment, mineral deposit, mineral localities, mineral resources, minor oxides, miocene, molybdenum, monazite, mount henry eakin, mount tozi, neodymium, nickel, niobium, no name creek, non-metals, paleozoic, palladium, pan concentrates, phanerozoic, phosphorus, placer, placer gold, platinum, platinum group elements, potassium, praseodymium, precious metals, promethium, prospect creek, proterozoic, quaternary, rare earth elements, ray mountains, ray mountains pluton, ray river, ray river basalt, ray river hot springs, ray river pluton, ree, resource assessment, resources, rhyolite, rubidium, ruby terrane, samarium, scheelite, schist, selenium, silica, silver, sithylemenkat lake, sithylemenkat pluton, sodium, soil chemistry, soil sampling, sphalerite, strategic minerals, stream sediments, strontium, sulfides, sulfur, tanana quadrangle, tantalum, tertiary, thallium, thorium, tin, titanium, tokusatatquaten lake, torment creek, tourmaline, tozitna terrane, trace elements, trace geochemical, trace metals, trans-alaska pipeline, tungsten, upper ray hot springs, uranium, vanadium, volcaniclastics, ytterbium, zeunerite, zinc, zirconium
Organization: State of Alaska