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(For further information on spectroscopy, 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.
IMAGE_OF_SAMPLE:
NO PHOTO
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.= |
| LIB_SPECTRA: | splib06a r 7992 | g.s.= |