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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: Plastic_Tyvek GDS369 White DESCRIPT

DOCUMENTATION_FORMAT: Man_Made

SAMPLE_ID: GDS369

MATERIAL_TYPE: Plastic

MATERIAL: White Plastic

FORMULA: CH4 compound

FORMULA_HTML: CH4 compound

COLLECTION_LOCALITY: Purchased from store in Golden, Colorado

ORIGINAL_DONOR: Gregg Swayze

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Lab

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Lab

SAMPLE_DESCRIPTION:

Sample cut from a new Tyvek suit. This sample has a thickness of 0.1 mm and is white in color.

IMAGE_OF_SAMPLE:
Photo of sample

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

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 was measured on side of fabric originally facing outward on suit. The spectrum decreases monotonically from the ultra violet to 2.25 microns beyond which the spectrum is dominated by strong absorptions. There are some weak absorptions at 1.3932, 1.4190, and 1.4224 microns. There are C-H stretch absorptions at 1.7304, 1.7653, and 1.8226 microns. There are weaker absorptions at 2.0103 and 2.0534 microns. There are also C-H combination bands at 2.3108, 2.3508 microns and and a broad complex of bands centered around 2.415 microns.

END_SPECTROSCOPIC_DISCUSSION.

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