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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Pyrite LV95-6A on Tail DESCRIPT
DOCUMENTATION_FORMAT: MIXTURE
SAMPLE_ID: LV95-6A
MIXTURE_TYPE: Intimate
MIXTURE: Pyrite (Pyrite group) + possible other sulfides
FORMULA: FeS2
FORMULA_HTML: FeS2
COLLECTION_LOCALITY: Leadville, Colorado, USA
ORIGINAL_DONOR: Gregg Swayze
COLLECTION_LATITUDE: Not Available # degrees and decimal minutes (N or S)
COLLECTION_LONGITUDE: Not Available # degrees and decimal minutes (W or E)
DATUM: Not Available # coordinate datum
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory, Denver, Colorado
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory, Denver, Colorado
SAMPLE_DESCRIPTION:
Weathered Pyrite from the surface of the Strayhorse Gulch mine tailings 1 km east of the City of Leadville. Sample may possibly contain other sulfides in low amounts.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
none
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 characteristic of pyrite with a broad Fe absorption at 1.20 microns and a sharp absorption edge in the visible. This is a coarse grained sample of pyrite that has withstood weathering for the better part of a century.
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 8903 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 26297 | g.s.= |