U.S. Geological Survey home page

USGS Spectral Library Version 7 Sample Description

Kokaly, R.F., Clark, R.N., Swayze, G.A., Livo, K.E., Hoefen, T.M., Pearson, N.C., Wise, R.A., Benzel, W.M., Lowers, H.A., Driscoll, R.L., and Klein, A.J., 2017, USGS Spectral Library Version 7: U.S. Geological Survey Data Series 1035, 61 p., https://doi.org/10.3133/ds1035
For more information on the library, see: local link web link

TITLE: Kaolin_Smect KLF506 .95Kaol DESCRIPT

DOCUMENTATION_FORMAT: MIXTURE

SAMPLE_ID: KLF506

MIXTURE_TYPE: Intimate

MIXTURE: Kaolinite/Smectite (95% Kaol.) (Kaolinite-Serpentine group)

FORMULA: Al2Si2O5(OH)4 + (Na,Ca)0.33(Al,Mg)2Si4O10(OH)2*nH2O

FORMULA_HTML: Al2Si2O5(OH)4 + (Na,Ca)0.33(Al,Mg)2Si4O10(OH)2•nH2O

COLLECTION_LOCALITY: Paris Basin, France

ORIGINAL_DONOR: Phoebe Hauff, Fred Kruse CSES/CIRES

CURRENT_SAMPLE_LOCATION: CSES/CIRES, Univ. of CO, Boulder

ULTIMATE_SAMPLE_LOCATION: CSES/CIRES, Univ. of CO, Boulder

SAMPLE_DESCRIPTION:

Kaolinite/smectite clays are produced as transitional phases as smectite weathers to kaolinite. This sample is from the Argiles Plastique Formation of the Paris Basin. This formation contains a paragenetic sequence from smectite to kaolinite.

Hauff, P.L., F.A. Kruse, and Medard Thiry, 1990, Spectral identification and characterization of kaolinite/smectite clays in weathering environments. Proceedings of the Fifth Australian Remote Sensing Conference, Perth, Australia, pp. 898-905.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

XRD was used to determine the percent kaolinite. This sample is 95% kaolinite.

Hauff, P.L., F.A. Kruse, and Medard Thiry, 1990, Spectral identification and characterization of kaolinite/smectite clays in weathering environments. Proceedings of the Fifth Australian Remote Sensing Conference, Perth, Australia, pp. 898-905.

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EPMA, ICP(Trace), WChem

COMPOSITION_TRACE:

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1b2b3b4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns