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DOCUMENTATION_FORMAT: Man_Made
SAMPLE_ID: GDS789
MATERIAL_TYPE: Paint Pigment
MATERIAL: Paint Pigment
FORMULA: Copper Acetate(s)
FORMULA_HTML:Copper Acetate(s)
COLLECTION_LOCALITY: Phillips Collection, Washington, D.C
ORIGINAL_DONOR: Patricia Favero
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Lab
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Lab
SAMPLE_DESCRIPTION:
Dry powdered paint pigment from Kremer Pigments Inc.
Visual examination in sunlight indicates this sample is cyan.
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:
This pigment has a strong reflectance peak centered at 0.493 microns and a broad absorption that stretches from 0.49 to 1.4 microns centered at 0.755 microns. Numerous vibrational absorptions dominate the NIR portion of the spectrum. Individual absorptions are centered at: 1.457, 1.492, 1.557, 1.582, 1.666, 1.683, 1.722, 1.748, 1.773, 1.861, 1.946, 1.990, 2.192, 2.252, 2.284, 2.310, 2.403, and about 2.47 microns (continuum removed positions). G. Swayze
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns