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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Pyrophyl.50+Ca-Mont.50 AMX16 DESCRIPT
DOCUMENTATION_FORMAT: Mixture
SAMPLE_ID: AMX16
MIXTURE_TYPE: Areal
MIXTURE: 50% pyrophyllite PYS1A and 50% Ca-Montmorillonite SAz-1
FORMULA: Al2Si4O10(OH)2 and (Ca)0.33(Al,Mg)2Si4O10(OH)2*nH2O
FORMULA_HTML: Al2Si4O10(OH)2 and
(Ca)0.33(Al,Mg)2Si4O10(OH)2•nH2O
COLLECTION_LOCALITY: (Staley, NC.), (Apache County, Arizona).
ORIGINAL_DONOR: (Bruce Hemingway), (Clay Mineral Society).
COLLECTION_LATITUDE: Not Available # degrees and decimal minutes (N or S)
COLLECTION_LONGITUDE: Not Available # degrees and decimal minutes (W or E)
DATUM: Not Available # coordinate datum
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory, Denver, Colorado
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory, Denver, Colorado
SAMPLE_DESCRIPTION:
Areal mixture of 50% pyrophyllite PYS1A and 50% Ca-Montmorillonite SAz-1 calculated from pure endmember spectra of these minerals.
See PYS1A, SAz-1
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
See pyrophyllite PYS1A and Ca-montmorillonite SAz-1
see:
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: EM(WDS) # XRF, EM(WDS), ICP(Trace), WChem
See PYS1A, SAz-1
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
See PYS1A, SAz-1
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
See PYS1A, SAz-1
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Spectrum has absorption characteristic of both mineral phases. Their absorptions overlap in the 1.4 micron region but are separate in the 2.2 micron region.
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns
See PYS1A, SAz-1
| LIB_SPECTRA_HED: | where | Wave Range | Av_Rs_Pwr | Comment |
|---|---|---|---|---|
| LIB_SPECTRA: | splib05a r 8954 | 0.2-3.0µm | 200 | g.s.= |
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