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

Sample Detail

Sample Number 90BT168
Project Talkeetna Mountains B-2

Sample Documentation

Analyses [Download All]

Reference Number PDF90-31-1990RX
Reference Date 1990-11-01
Citation PDF 90-31
Laboratory ALS Chemex
Description 51 rock samples were crushed so that at least 70 percent of the material passed through a -10 (2 mm) mesh screen. A 200-gram, representative split of the sample was then taken using a riffle splitter. The 200-gram sample was then pulverized in a chrome steel ring mill so that 95 percent of the sample passed through a -150 (106 micron) mesh screen. 51 samples were analyzed for gold using Atomic Absorption Spectroscopy after Fire Assay Fusion. 51 samples were analyzed for trace elements using Inductively Coupled Plasma - Atomic Emission Spectroscopy after HCl:HNO3 (3:1) acid digestion. 51 samples were analyzed for arsenic using Atomic Absorption Spectroscopy after HCl:HNO3 (3:1) acid digestion. 51 samples were analyzed for bismuth using Atomic Absorption Spectroscopy after Hydrochloric and Potassium Chlorate acid digestion. 51 samples were analyzed for tungsten using a Colorimetric method after Potassium Pyrosulfate Fusion.
Sample Type rock