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: END_XRD_ANALYSIS.

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

COMPOSITION_TRACE: Ag 444 ppm
COMPOSITION_TRACE: As <25 ppm
COMPOSITION_TRACE: Au 0.005 ppm
COMPOSITION_TRACE: Cd <10 ppm
COMPOSITION_TRACE: Cr 20 ppm
COMPOSITION_TRACE: Cu 4300 ppm
COMPOSITION_TRACE: Hg 0.12 ppm
COMPOSITION_TRACE: Mn <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 <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
tr chalcopyrite
tr quartz

avg gr sz = 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: 1_2_3_4_

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 ____ 0.2-3.0µm 200 g.s.=

LIB_SPECTRA: splib06a r ____ 1.5-25µm 250 g.s.=