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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: Kaol_Wxl+0.5Musc_Ruby AMX12 DESCRIPT

DOCUMENTATION_FORMAT: Mixture

SAMPLE_ID: CU91-250A

MIXTURE_TYPE: Areal

MIXTURE: 50% Kaolinite CM9 and 50% Muscovite GDS113

FORMULA: Al2Si2O5(OH)4 and KAl2Si3O10(OH)2

FORMULA_HTML: Al2Si2O5(OH)4 and
KAl2Si3O10(OH)2

COLLECTION_LOCALITY: Mesa Alta, New Mexico (Kaolinite) and Brazil (muscovite).

ORIGINAL_DONOR: Clay Mineral Standard (kaolinite) and Jim Post from SUNY (muscovite)

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:

This is an areal mixture (linear) calculated using spectra of pure endmembers.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

see: Kaolinite CM9 and Muscovite GDS113

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: NONE # XRF, EM(WDS), ICP(Trace),WChem

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

See Kaolinite CM9 and Muscovite GDS113

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

Kaolinite CM9 and Muscovite GDS113

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

Spectrum has a muscovite band superimposed on the kaolinite doublet at 2.2 microns that strongly resembles that of halloysite.

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns 20-150 microns

LIB_SPECTRA_HED: where Wave Range Av_Rs_Pwr Comment
Av_Rs_Pw r Comment
LIB_SPECTRA: splib05a r 8441 0.2-3.0µm 200 g.s.=


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