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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Alum. 33+ Kaol. 33+ Musc. 33 AMX2 DESCRIPT
DOCUMENTATION_FORMAT: MIXTURE
SAMPLE_ID: AMX2
MIXTURE_TYPE: Areal
MIXTURE: Alunite HS295.3B+ well crystallized Kaolinite KGa-1+Muscovite CU91-250A
FORMULA: KAl3(SO4)2(OH)6 + Al2Si4O10(OH)2 + KAl2[AlSi3O10](OH,F)2
FORMULA_HTML: KAl3(SO4)2(OH)6 +Al2 Si4O10(OH)2 + KAl2[AlSi3O10] (OH,F)2
COLLECTION_LOCALITY: See Alunite HS295.3B, Kaolinite KGa-1, Muscovite CU91-250A
ORIGINAL_DONOR: See Alunite HS295.3B, Kaolinite KGa-1, Muscovite CU91-250A
CURRENT_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory.
ULTIMATE_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory.
SAMPLE_DESCRIPTION:
Alun. 33% +Kaol 33% + Musc 33% See HS295.3B, KGa-1 and CU91-250A
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
See HS295.3B, KGa-1 and CU91-250A
see:
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: EM(WDS) # XRF, EM(WDS), ICP(Trace), WChem
See HS295.3B, KGa-1 and CU91-250A
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
See HS295.3B, KGa-1 and CU91-250A
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
See HS295.3B, KGa-1 and CU91-250A
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Spectrum resembles that of halloysite in the 2.2 micron region but has strong alunite absorptions near 1.45 and 1.7 microns.
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns
See HS295.3B, KGa-1 and CU91-250A
| LIB_SPECTRA_HED: | where | Wave Range | Av_Rs_Pwr | Comment |
|---|---|---|---|---|
| LIB_SPECTRA: | splib05a r 7165 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 23855 | g.s.= |