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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: 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.=


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