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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: 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.=


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