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DOCUMENTATION_FORMAT: Man_Made
SAMPLE_ID: SM93-15
MATERIAL_TYPE: Mineral mixture
MATERIAL: Precipitate from Acid Waste Water Treatment
FORMULA: Unknown
FORMULA_HTML: Unknown
COLLECTION_LOCALITY: Summitville mine area, edge of pond
ORIGINAL_DONOR: Gregg Swayze and Trude King
CURRENT_SAMPLE_LOCATION: U.S. Geological Survey, Denver Spectroscopy Lab
ULTIMATE_SAMPLE_LOCATION: U.S. Geological Survey, Denver Spectroscopy Lab
SAMPLE_DESCRIPTION:
Sample was collected from the edge of a pond on the tailings pile at the Summitville Mine during the summer of 1993. The sample was of a waste product generated during de-acidification of mine waste water. The sample was transported and dumped on the tailings pile for containment.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: EPMA # XRF, EPMA, ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
The spectrum of the moist sample has very low reflectance (mostly < 10%) and the same features as the dried sample but with very strong water absorption features superimposed. The 2.255 micron absorption is lost in the noise and broad saturated water absorption at wavelengths longer than 1.9 microns.
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns