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: Kaolinite GDS11 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: GDS11

MINERAL_TYPE: Phyllosilicate

MINERAL: Kaolinite (Kaolinite-Serpentine group)

FORMULA: Al2Si2O5(OH)4

FORMULA_HTML: Al₂Si₂O₅(OH)₄

COLLECTION_LOCALITY: unknown

ORIGINAL_DONOR: Wards Natural Science

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

Polymorphous with Dickite, Halloysite and Nacrite.

A spectrum for this sample was published by:

Clark, R.N. and P.G. Lucey, 1984, Spectral Properties of Ice-Particulate Mixtures and Implications for Remote Sensing I: Intimate Mixtures: J. Geophys. Res., 6341-6348.

Dry sieved to less than 63 µm. The mean grain size is 10-20 µm according to Clark and Lucey (1984), but is probably closer to 10 µm. From the visible-near-IR spectrum, the kaolinite appears spectrally pure.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Kaolinite + anatase (Norma Vergo, USGS)

END_XRD_ANALYSIS.

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

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1b2_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 2574	0.2-3.0µm	200	g.s.= 0.001cm
LIB_SPECTRA:	splib05a r 3949	0.2-3.0µm	200	g.s.=

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U.S. Department of the Interior | U.S. Geological Survey URL: https://pubsdata.usgs.gov/pubs/of/2003/ofr-03-395/DESCRIPT/M/kaolinite_gds11.html Questions or Assistance: USGS Web Contact Page Last Modified: Sat Jan 12 23:32 EDT 2013