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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: Galena S26-40 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: S26-40

MINERAL_TYPE: Sulfide

MINERAL: Galena

FORMULA: PbS

FORMULA_HTML: PbS

COLLECTION_LOCALITY: Ellenville Mine, Ellenville, NY

ORIGINAL_DONOR: Jules Friedman

CURRENT_SAMPLE_LOCATION: Jules Friedman, USGS

ULTIMATE_SAMPLE_LOCATION: Jules Friedman, USGS

SAMPLE_DESCRIPTION:

Forms series with Clausthalite.

Wilbur, J.S, F.E. Mutschler, J.D. Friedman, and R.E. Zartman, 1990, New chemical, isotopic, and fluid inclusion data from zinc-lead-copper veins, Shawangunk Mountains, New York. Economic Geology, v.85 no.1, pp. 182-196.

Friedman, J.D., F.E. Mutschler, R.E. Zartman, P.H. Briggs, G.A. Swayze, and A.F. Theisen, 1989, Shawangunk ore district, New York: Geochemical and spectral data. USGS Open-File Report 89-193, p. 92.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Not Available

END_XRD_ANALYSIS.

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

COMPOSITION
KEYWORD
Element
ASCII
Amount Units
COMPOSITION_TRACE: Ag 444 ppm
COMPOSITION_TRACE: As less than 25 ppm
COMPOSITION_TRACE: Au 0.005 ppm
COMPOSITION_TRACE: Cd less than 10 ppm
COMPOSITION_TRACE: Cr 20 ppm
COMPOSITION_TRACE: Cu 4300 ppm
COMPOSITION_TRACE: Hg 0.12 ppm
COMPOSITION_TRACE: Mn less than 5 ppm
COMPOSITION_TRACE: Ni 30 ppm
COMPOSITION_TRACE: Pb
COMPOSITION_TRACE: Sb 400 ppm
COMPOSITION_TRACE: Se 45 ppm
COMPOSITION_TRACE: Te 0.87 ppm
COMPOSITION_TRACE: Tl 0.2 ppm
COMPOSITION_TRACE: V less than 5 ppm
COMPOSITION_TRACE: Zn 110 ppm

COMPOSITION_DISCUSSION:

Mode wt%
Gal 98.0
Sph
Cpy ~ 1.0
Py
Qtz 1.0

Assay wt%
Cu 0.49
Fe 0.49
Pb 84.66
Zn 0.02
S 13.0

Wilbur, J.S, F.E. Mutschler, J.D. Friedman, and R.E. Zartman, 1990, New chemical, isotopic, and fluid inclusion data from zinc-lead-copper veins, Shawangunk Mountains, New York. Economic Geology, v.85 no.1, pp. 182-196.

Friedman, J.D., F.E. Mutschler, R.E. Zartman, P.H. Briggs, G.A. Swayze, and A.F. Theisen, 1989, Shawangunk ore district, New York: Geochemical and spectral data. USGS Open-File Report 89-193, p. 92.

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

mode:
100 vol% galena
trace chalcopyrite
trace quartz

avrage grain size= 75 µm

Grains have shiny blue metallic luster and cubic cleavage. This is consistent with a slightly contaminated galena sample. G. Swayze.

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

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: splib04a r 1720 0.2-3.0µm 200 g.s.= 75 µm
LIB_SPECTRA: splib05a r 2772 0.2-3.0µm 200 g.s.=


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