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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: Asphalt_Tar GDS346 Blck_Roof DESCRIPT

DOCUMENTATION_FORMAT: Man Made

SAMPLE_ID: GDS346

MATERIAL_TYPE: Asphalt

MATERIAL: Asphalt roof

FORMULA: Unknown

FORMULA_HTML: Unknown

COLLECTION_LOCALITY: Denver, Colorado, USA

ORIGINAL_DONOR: Gregg Swayze

CURRENT_SAMPLE_LOCATION: U.S. Geological Survey, Denver Spectroscopy Lab

ULTIMATE_SAMPLE_LOCATION: U.S. Geological Survey, Denver Spectroscopy Lab

SAMPLE_DESCRIPTION:

New (never remelted) black roofing asphalt. Solidified chunk.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

see:

END_XRD_ANALYSIS.

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

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

The spectrum of this sample has a broad (500nm fwhm) absorption centered at 0.847 microns. The overall reflectance level is around 0.27%. Muted absorptions at 1.7 and 2.3 microns are probably C-H related.

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1a2_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: splib05a r 9759 0.2-3.0µm 200 g.s.=


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