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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Phlogopite_Sand_Mix BR93-20 DESCRIPT
DOCUMENTATION_FORMAT: MIXTURE
SAMPLE_ID: BR93-20
MIXTURE_TYPE: Intimate
MIXTURE: Phlogopite (mica group) bearing sandy soil
FORMULA: K(Mg,Fe+2)3AlSi3O10(OH,F)2
FORMULA_HTML: K(Mg,Fe+2)3AlSi3O10(OH,F)2
COLLECTION_LOCALITY: Red Hill area, Barstow California, USA
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
ORIGINAL_DONOR: Eric Livo
CURRENT_SAMPLE_LOCATION: USGS Spectral Library Denver, Colorado
ULTIMATE_SAMPLE_LOCATION: USGS Spectral Library Denver, Colorado
SAMPLE_DESCRIPTION:
Phlogopite (altered biotite) -rich sandy alluvial-fan soil
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Major component: phlogopite
Minor components: albite, microcline, and chlorite-clinochlorite
Trace components: actinolite, magnesiohornblende
XRD analysis by: Steve Sutley
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
No additional compositional details available.
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
IMAGE_OF_SAMPLE: Not Available
SPECTROSCOPIC_DISCUSSION:
generic - very broad Fe2+ one micron absorption band. The spectral feature at 2.32 microns contains a sharp phlogopite band center with broad chlorite wings on either side.
END_SPECTROSCOPIC_DISCUSSION.
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 8893 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 26287 | g.s.= |