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Geochemical analysis of rock sample 3471 (in USBM OFR 85-86)

Dates

Dataset Reference Date
2020-12-22

Summary

A 20 gram split was analyzed for gold using a fire assay preconcentration and in some cases, an atomic absorption analysis. When the detection limits of lead and zinc were exceed for atomic absorption methods, a specific wet assay procedure was used. A metallic-fire assay method was used when coarse gold was suspected to be present in the samples, or basic size distribution of metallic gold was desired. The sample was crushed and screened to separate possible metallics in the plus 100 mesh fraction. The entire plus 100 mesh fraction was then fire-assayed. A 20-gram aliquot was fire-assayed from the minus-100 mesh fraction, with the final assay value being calculated from the combined data.

Attached Files

Material Request Instructions

For additional information about the sample, see: https://dggs.alaska.gov/sample/id/93082

Map

Communities

  • ReSciColl Archive

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 3471 (in USBM OFR 85-86)

NGGDPP Item Extension

alternateGeometryThe coordinates are represented in North American Datum of 1927 (NAD27). Location was derived from the following method(s): Geochemical analysis files

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