DOCUMENTATION_FORMAT: Man_Made
SAMPLE_ID: JM317 Lab No. 9192 "Specpure" reagent
MATERIAL_TYPE: Chemical Reagent
MATERIAL: Rare Earth Oxide
FORMULA: Er2O3
FORMULA_HTML: Er2O3
COLLECTION_LOCALITY: Johnson, Matthey, and Co. Limited, London
ORIGINAL_DONOR: Steve Wilson USGS
CURRENT_SAMPLE_LOCATION: USGS Denver Bld. 20 Room G1509
ULTIMATE_SAMPLE_LOCATION: USGS Denver Bld. 20 Room G1509
SAMPLE_DESCRIPTION:
Erbium oxide "Specpure" chemical reagent.
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 is dominated by numerous intense sharp f-f transition absorptions in the visible and NIR region. A partial list includes absorptions at 0.3808, 0.4086, 0.4548, 0.4906, 0.5228, 0.6545, 0.7999, 0.9794, 1.4720, and 1.5344 microns. 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