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Geochemical analysis of rock sample 68WR225B

Dates

Dataset Reference Date
2020-12-22
Info Date
1968

Summary

Samples were analyzed for a suite of 31 elements (trace and major oxide) using semi-quantitative direct-current arc semiquantitative specrography. Results were determined from visual compairison of spectra from sample compared to standard spectra for known pure oxides/carbonates. Concentrates are presented at geometric intervals (10, 20, 50, 100) with midpoint values (15, 30, 70) presented if warranted. Precision is plus or minus 1 reporting interval at 83% confidence, and plus or minus 2 reporting intervals at 96% confidence. Samples were analyzed for As, Bi, Cd, Sb, and Zn using atomic absorption techniques. Samples containing at least 20ppm As, 2ppm Bi, or 4ppm Sb were analyzed for Au using atomic absorption.

Attached Files

Material Request Instructions

For additional information about the sample, see: https://dggs.alaska.gov/sample/id/64385

Map

Communities

  • National Digital Catalog

Tags

Provenance

Data source
File Processing
File Process
Type
NGGDPP
Reference Item
Collection of geochemical data from Alaska (DGGS)
Reference File
v_nggdpp_geochem_sample_metadata.csv

Additional Information

Identifiers

Type Scheme Key
title Parent-4f4e49cfe4b07f02db5da760 Geochemical analysis of rock sample 68WR225B

NGGDPP Item Extension

alternateGeometryThe coordinates are represented in North American Datum of 1927 (NAD27). Location was derived from the following method(s): Location from USGS publication OF 87-284

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