AGDB measured parameter: Ir_ppm_FA_ES

Iridium, in parts per million by weight, by PbO fire assay and quantitative direct-current arc emission spectrography

Reference for the analytical method

Author Baedecker, Philip A., editor
Year 1987
Title Methods for geochemical analysis
Series Bulletin
Issue 1770
Pages 1 v.: ill.; 28 cm
URL http://pubs.er.usgs.gov/publication/b1770
Notes Includes bibliographies. Analytical methods used in the Geologic Division laboratories of the U.S. Geological Survey for the inorganic chemical analysis of rock and mineral samples.
Organization USGS-BAL

Other parameters measuring Ir

Parameter Description
Ir_ppm_ES_SQ Iridium, in parts per million by weight, by semi-quantitative visual 6-step or direct reader direct-current arc emission spectrography
Ir_ppm_FA_ES Iridium, in parts per million by weight, by PbO fire assay and quantitative direct-current arc emission spectrography
Ir_ppm_FA_MS Iridium, in parts per million by weight, by NiS fire assay and inductively coupled plasma-mass spectroscopy
Ir_ppm_NA Iridium, in parts per million by weight, by neutron activation