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Clark et. al. 2003 USGS Open File Report 03-395
Spectral Library splib05a Sample Description

(For further information on spectrsocopy, see: http://speclab.cr.usgs.gov)

TITLE: Renyolds_Tunnel_Sludge SM93-15 DESCRIPT

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 water 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: EM(WDS) # XRF, EM(WDS), ICP(Trace), WChem

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

The spectrum of the dried sludge has very strong nearly saturated Fe-absorptions at 0.4954 and 0.9556 microns. The rest of the spectrum is dominated by broad water absorptions. There is a weak vibrational absorption at 2.255 microns. 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

LIB_SPECTRA_HED: where Wave Range Av_Rs_Pwr Comment
LIB_SPECTRA: splib05a r 10550 0.2-3.0µm 200 g.s.=
LIB_SPECTRA: splib05a r 10561 0.2-3.0µm 200 g.s.=


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