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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Calcite.80+Mont_Swy-1 GDS212 DESCRIPT
DOCUMENTATION_FORMAT: MIXTURE
SAMPLE_ID: GDS212 MIXTURE_TYPE: Intimate
MIXTURE: 80wt% Calcite WS272 + 20wt% Montmorillonite SWy-1
FORMULA: CaCO3 + (Na,Ca0.5)0.33(Al,Mg)2[(SiAl)4O10(OH)2]*nH2O
FORMULA_HTML: CaCO3 + Na,Ca0.5)0.33(Al,Mg)2[(SiAl)4O10(OH)2•nH2O
COLLECTION_LOCALITY: See Calcite WS272 and Montmorillonite SWy-1
ORIGINAL_DONOR: Ward Science Collection and Source Clay Society
COLLECTION_LATITUDE: Not Available # degrees and decimal minutes (N or S)
COLLECTION_LONGITUDE: Not Available # degrees and decimal minutes (W or E)
DATUM: Not Available # coordinate datum
CURRENT_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Physical mixture of calcite and montmorillonite pure phases in proportions 80wt% Calcite WS272 + 20wt% Montmorillonite SWy-1.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
see: See Calcite WS272 and Montmorillonite SWy-1
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: NONE # XRF, EM(WDS), ICP(Trace),WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
See: See Calcite WS272 and Montmorillonite SWy-1
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
None
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Spectrum has absorptions characteristic of calcite and montmorillonite absorptions. There is very little overlap between absorptions in this mixture.
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: | splib05a r 7739 | 0.2-3.0µm | 200 | g.s.= |
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