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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Black Mn Coat Tailings LV95-3 DESCRIPT
DOCUMENTATION_FORMAT: MIXTURE
SAMPLE_ID: LV95-3
MIXTURE_TYPE: Coating # Areal, Intimate, Coating, or Molecular
MIXTURE: Mn-coating on rock
FORMULA: Not available
FORMULA_HTML: Not available
COLLECTION_LOCALITY: Leadville Mining District, Leadville, Colorado, USA
ORIGINAL_DONOR: Gregg Swayze
CURRENT_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Sample was collected from the distal base of a waste rock pile at about 3400 meter elevation 3 km east of the City of Leadville, Colorado. The surface measured spectrally is that which faced upward.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Not Available
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
None
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
None
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Spectrum increases monotonically from short wavelengths in the UV to a relative maximum in reflectance near 2.3 microns. Superimposed on this broad absorption that is apparently characteristic of Mn-coatings is a broad band centered at 1.28 microns. A weak band near 2.34 microns may indicate carbonate or chlorite?
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1b2_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 9062 | 0.2-3.0µm | 200 | g.s.= |
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