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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Painted_Aluminum GDS333 LgGr DESCRIPT
DOCUMENTATION_FORMAT: Man_Made
SAMPLE_ID: GDS333
MATERIAL_TYPE: Paint
MATERIAL: Painted Aluminum Roofing
FORMULA: CH4 compound
FORMULA_HTML: CH4 compound
COLLECTION_LOCALITY: Hardware Store
ORIGINAL_DONOR: Gregg Swayze
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Light gray painted corrugated aluminum roofing. Metal is 0.5 mm thick.
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:
Spectrum has abrupt absorption edge in visible portion of spectrum with two weak absorptions at 0.4423 and 0.5029 microns. After a peak in reflectance at 0.579 microns the spectrum slopes downward toward longer wavelengths. There are at least 10 distinct absorptions of variable strength in the 2 - 2.5 micron region with the strongest absorptions at 2.2647 and 2.3056 microns probably related to organic constituents in the paint coating.
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 10111 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 28401 | g.s.= |