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:
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:
The spectrum of this sample has a broad (0.5 micron FWHM) absorption centered at 0.847 microns. The overall reflectance level is around 2.7%. 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