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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Calcite.7+Kaolwxl.3 AMX9 DESCRIPT
DOCUMENTATION_FORMAT: MIXTURE
SAMPLE_ID: AMX9
MIXTURE_TYPE: Areal
MIXTURE: 70% Calcite WS272 + 30% Kaolinite KGa-1
FORMULA: CaCO3, Al2Si2O5(OH)4
FORMULA_HTML: CaCO3
Al2Si2O5(OH)4
COLLECTION_LOCALITY: (Tunguska, Siberia, USSR), (Washington county, Georgia)
ORIGINAL_DONOR: (Wards Scientific), (Clay Mineral 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:
Sample is a calculated linear mixture of calcite and well-crystallized kaolinite constructed from spectra of the pure minerals.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
See Calcite WS272 and Kaolinite KGa-1
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: EM(WDS) # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
See Calcite WS272 and Kaolinite KGa-1
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
See Calcite WS272 and Kaolinite KGa-1
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Spectrum has absorptions characteristic of calcite and kaolinite. In the 2 - 2.5 micron region the calcite absorption at 2.3389 micron dominates the spectrum partially concealing the entire kaolinite doublet band at 2.2068 microns.
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 7711 | 0.2-3.µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 24615 | g.s.= |