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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: Montmorill+Trichlor SWy 1ml DESCRIPT

DOCUMENTATION_FORMAT: Man_Made

SAMPLE_ID: None

MATERIAL_TYPE: Phyllosilicate + organic solvent

MATERIAL: Montmorillonite + trichloroethane

FORMULA: (Na,Ca)0.33(Al,Mg)2Si4O10(OH)2*nH20 + C2H3Cl3

FORMULA_HTML: (Na,Ca)0.33(Al,Mg)2Si4O10 (OH)2•nH20 + C2H3Cl3

COLLECTION_LOCALITY: Montmorillonite SWy-1 from Crook, Wyoming, USA and trichloroethane from a chemical supplier.

ORIGINAL_DONOR: Trude King

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

1 ml of trichloroethane solvent mixed with clay

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

see:

END_XRD_ANALYSIS.

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

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

Spectrum has normal clay absorptions described for Montmorillonite SWy-1 and additional organic solvent related features at 1.5353, 1.5923, 1.6335, 1.6806, 1.7170, 1.7500, 1.8262, 2.2576, and 2.2864 microns.

END_SPECTROSCOPIC_DISCUSSION.

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