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Clark et. al. 2003 USGS Open File Report 03-395
Spectral Library splib05a Sample Description

(For further information on spectrsocopy, 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.

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.=


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