State of Alaska Alaska | Natural Resources DNR | Geological & Geophysical Surveys DGGS | Geochemistry Geochem

Sample Detail

Sample Number 09JEA011A
Project Slate Creek-Mentasta Slana

Sample Documentation

Analyses [Download All]

Reference Number FA09136826/FA09137541
Reference Date 2009-12-15
Citation RDF 2010-2
Laboratory ALS Chemex
Description 107 dggs rock samples were crushed with a Terminator oscillating jaw crusher with chrome steel alloy plates so that at least 70 percent of the material passes through a -10 mesh (2 mm) screen. Representative aliquots of 250 grams each were taken using a stainless steel riffle splitter. These samples were then pulverized in a chrome steel ring mill so that 85 percent of the sample passed through a -200 mesh (75 micron) screen. Whole-rock oxide analyses were performed using representative splits of each 250 gram pulp. Whole rock, major- and minor-element oxides were determined at ALS Chemex by XRF following a lithium borate fusion. Trace-element values for Ba, Nb, Rb, Sr, Y, and Zr were determined by XRF on apressed pellet.
Sample Type rock