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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Nanohematite BR93-34B2 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: BR93-34B2
MINERAL_TYPE: Oxide
MINERAL: Nanohematite
FORMULA: Fe2O3
FORMULA_HTML: Fe2O3
COLLECTION_LOCALITY: Rodman Mountains, California
ORIGINAL_DONOR: Livo
CURRENT_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory.
ULTIMATE_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory.
SAMPLE_DESCRIPTION:
Hematite on quartzite, muscovite, kaolinite.
IMAGE_OF_SAMPLE:
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
quartz(major), muscovite(minor), orthoclase(minor), albite(minor).
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: NONE # XRF, EM(WDS), ICP(Trace),WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Classic hematite spectrum with strong iron absorptions at 0.55 and 0.88 microns - with a slight shoulder at 0.66. The spectrum has a well formed muscovite feature with absorptions at 2.21, 2.35, and 2.45 microns.
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1b2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns
| LIB_SPECTRA_HED: | where | Wave Range | Av_Rs_Pwr | Comment |
|---|---|---|---|---|
| LIB_SPECTRA: | splib05a r 4851 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 15589 | g.s.= |