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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Chrysotile HS323 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: HS323
MINERAL_TYPE: Phyllosilicate
MINERAL: Chrysotile (Kaolinite-Serpentine Group)
FORMULA: Mg3Si2O5(OH)4
FORMULA_HTML: Mg3Si2O5(OH)4
COLLECTION_LOCALITY: Arizona
ORIGINAL_DONOR: Smithsonian
CURRENT_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory.
ULTIMATE_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory.
SAMPLE_DESCRIPTION:
Chrysotile was not available in grain sizes greater than 200µm and was not sieved to grain sizes less than 200µm because of its carcinogenic character.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
This is a pure chrysotile. Sample analysis by Norma Vergo.
Clark, R.N., T.V.V. King, M. Klejwa, G. Swayze, and N. Vergo, 1990, High spectral resolution reflectance spectroscopy of minerals: J. Geophys Res. 12653-12680.
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE:
COMPOSITION_DISCUSSION:
Several attempts were made to chemically analyze this sample by XRF. However, sufficient quantities were not available to perform a reliable analysis.
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
Microscopically this is a pure chrysotile. Fibers avg. diameter is about 8 µm from optical observations. G. Swayze.
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1a2_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: | splib04a r 1042 | 0.2-2.7µm | 200 | g.s.= 8 µm |
| LIB_SPECTRA: | splib05a r 1832 | 0.2-2.5µm | 200 | g.s.= 8 µm |
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