Near infrared detection of ammonium minerals
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Abstract
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.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Near infrared detection of ammonium minerals |
| Series title | Geophysics |
| DOI | 10.1190/1.1442362 |
| Volume | 52 |
| Issue | 7 |
| Year Published | 1987 |
| Language | English |
| Publisher | Society of Exploration Geophysicists |
| Description | 7 p. |
| First page | 924 |
| Last page | 930 |
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