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(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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