|
|
(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Alun0.3+Musc0.4+Pyro0.3 AMX1 DESCRIPT
DOCUMENTATION_FORMAT: Mixture
SAMPLE_ID: AMX1
MIXTURE_TYPE: Areal
MIXTURE: Alun. 30% + Musc 40% +Pyroph 30%
FORMULA: KAl3(SO4)2(OH)6 + KAl2[AlSi3O10](OH,F)2 + Al2Si4O10(OH)2
FORMULA_HTML: KAl3(SO4)2(OH)6 + KAl2[AlSi3O10](OH,F)2 +
Al2Si4O10(OH)2
COLLECTION_LOCALITY: Constructed from other spectra
ORIGINAL_DONOR: Gregg Swayze
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
See alunite_res9, muscovite_gds113, pyrophyllite_pys1a.html
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
See alunite_res9, muscovite_gds113, pyrophyllite_pys1a.html
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: XRF # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE:
See alunite_res9, muscovite_gds113, pyrophyllite_pys1a.html
COMPOSITION_DISCUSSION:
See alunite_res9, muscovite_gds113, pyrophyllite_pys1a.html
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
See alunite_res9, muscovite_gds113, pyrophyllite_pys1a.html
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
See alunite.res9, muscovite.gds113, pyrophyllite.pys1a.html
END_SPECTROSCOPIC_DISCUSSION.
Spectrum has very complex 1.4 and 2-2.5 micron region with superimposed absorptions from all three minerals. The 2.17 micron band typical of alunite has a sharp 2.165 micron band from pyrophyllite. Spectral features of muscovite in this region and at 1.4 microns are dominated by those of alunite and pyrophyllite.
SPECTRAL_PURITY: 1a2_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 7177 | 0.2-3.0µm | 200 | g.s.= |
| AccessibilityFOIAPrivacyPolicies and Notices | |
 |
|