Near infrared detection of ammonium minerals
Diagnostic near-infrared spectral features have been identified for minerals with ammonium (NH (super +) 4 ) bound in the crystal structure. Spectral bands near 2.12, 2.02, and 1.56 mu m are characteristic of synthetic and natural NH 4 -bearing minerals. Laboratory spectra of NH 4 -bearing minerals are distinct from spectra of OH-bearing minerals and have diagnostic shifts in band position among different mineral types. NH 4 -bearing minerals were detected at several mineralized hot-spring deposits in the western U.S. by means of hand-held and airborne instruments. Near-infrared detection of NH 4 -bearing minerals may provide useful information for prospecting for certain ore deposits and may provide a better understanding of the nitrogen cycle within geologic environments.
Citation Information
Publication Year | 1987 |
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Title | Near infrared detection of ammonium minerals |
DOI | 10.1190/1.1442362 |
Authors | M. D. Krohn, S. P. Altaner |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Geophysics |
Index ID | 70014849 |
Record Source | USGS Publications Warehouse |