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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Brookite HS443 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: HS443
MINERAL_TYPE: Oxide
MINERAL: Brookite (Rutile group)
FORMULA: TiO2
FORMULA_HTML: TiO2
COLLECTION_LOCALITY: Arkansas
ORIGINAL_DONOR: Hunt and Salisbury Collection
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Trimorphous with Anatase and Rutile.
IMAGE_OF_SAMPLE:
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
40 kV - 30 mA, 6.5-9.5 keV
File: brkt443.out, -.mdi
References: JCPDS #29-1360
Found: Brookite, minor quartz, very weak reflections at 1.716, 1.373 Angstroms.
Comment: Based on sharpness of reflections, brookite is exceptionally well
crystallized.
J.S. Huebner, J. Pickrell, and T. Schaefer, 1994,written communication(USGS)
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:
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1b2b3c4_ # 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: | splib04a r 720 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 1391 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 3811 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 3823 | g.s.= |