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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Galena S26-39 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: S26-39
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 | 120.3 | ppm |
| COMPOSITION_TRACE: | As | less than 25 | ppm |
| COMPOSITION_TRACE: | Au | .005 | ppm |
| COMPOSITION_TRACE: | Cd | less than 10 | ppm |
| COMPOSITION_TRACE: | Cr | 10 | ppm |
| COMPOSITION_TRACE: | Cu | 4500 | ppm |
| COMPOSITION_TRACE: | Hg | 0.38 | ppm |
| COMPOSITION_TRACE: | Mn | less than 5 | ppm |
| COMPOSITION_TRACE: | Ni | less than 5 | ppm |
| COMPOSITION_TRACE: | Pb | ||
| COMPOSITION_TRACE: | Sb | 100 | ppm |
| COMPOSITION_TRACE: | Se | 50 | ppm |
| COMPOSITION_TRACE: | Te | 0.39 | ppm |
| COMPOSITION_TRACE: | Tl | less than 0.2 | ppm |
| COMPOSITION_TRACE: | V | less than 5 | ppm |
| COMPOSITION_TRACE: | Zn | 500 | ppm |
COMPOSITION_DISCUSSION:
Mode wt%
Gal 98.0
Sph
Cpy ~ 1.0
Py
Qtz 1.0
Assay wt%
Cu 0.45
Fe 0.49
Pb 84.61
Zn 0.05
S 12.8
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 of quartz
No chalcopyrite is visible, although luster of some grains may be streaked with brass yellow. Galena has blue metallic luster and cubic cleavage indicating this is a nearly pure sample of galena. 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 1710 | 0.2-3.0µm | 200 | g.s.= 50 µm |
| LIB_SPECTRA: | splib05a r 2760 | 0.2-3.0µm | 200 | g.s.= |
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