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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Alun366+.50PyroPYS1A GDS222 DESCRIPT
DOCUMENTATION_FORMAT: MIXTURE
SAMPLE_ID: Alunite WS366 + Pyrophyllite PYS1A
MIXTURE_TYPE: Intimate
MIXTURE: alunite & pyrophyllite GDS222
FORMULA: KAl3(SO4)2(OH)6 + Al2Si4O10(OH)2
FORMULA_HTML: KAl3(SO4)2(OH)6 +Al2 Si4O10(OH)2
COLLECTION_LOCALITY: Alunite WS366, Marysvale UT, See Pyrophyllite PYS1A
ORIGINAL_DONOR: Ward Science Collection WS366, Jim Crowley PYS1A
CURRENT_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Intimate mixture of Alunite WS366 50wt% + 50wt% Pyrophyllite PYS1A
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
See pyrophyllite PYS1A, no data for WS366
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITIONAL_ANALYSIS:
NONE
COMPOSITION_TRACE:
COMPOSITION_DISCUSSION:
none
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
none
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Spectrum resembles that of alunite with a sharp band at 2.165 microns superimposed on the 2.17 micron alunite absorption. The 1.3934 micron pyrophyllite absorption is present in the 1.4 micron region as well as alunite absorptions at 1.4269 and 1.4780 microns.
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 7190 | 0.2-3.0µm | 200 | g.s.= |
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