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Electromagnetic Resonance Borehole Assay Logging.

Authors
Cook-JC
Source
NTIS: PB 283 734 Available for Reference At Bureau Libraries :103 pages
Link
NIOSHTIC No.
10001885
Abstract
This study was to identify and evaluate known technologies employing electromagnetic resonance phenomena in solid minerals for their identification and assaying, particularly assay logging of exploratory boreholes. A literature research and study revealed some little-known, nuclear magnetic resonance (nmr) techniques developed by a group at the University of Geneva, Switzerland. These are suitable for use in weak, inhomogeneous magnetic fields. Laboratory nmr tests of numerous U.S. ore minerals showed good identifying signals from phosphates, fluorspar, bauxite, oil shale, and spodumene (lithium) ores, but not from copper, lead, antimony, or manganese ores tested. Use of electron paramagnetic resonance "signatures" for such ores is suggested. A conceptual design for an nmr assay logging system is proposed.
Publication Date
19770101
Document Type
CP; Final Contract Report;
Fiscal Year
1977
NTIS Accession No.
PB-283734
NTIS Price
A07
Identifying No.
OFR 69-78
NIOSH Division
DRC;
Source Name
NTIS: PB 283 734 Available for Reference At Bureau Libraries
Performing Organization
Teledyne Geotech
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