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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Lepidolite NMNH105543 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: NMNH105543
MINERAL_TYPE: Phyllosilicate
MINERAL: Lepidolite (Mica group)
FORMULA: K(Li,Al)3(Si,Al)4O10(F,OH)2
FORMULA_HTML: K(Li,Al)3(Si,Al)4O10(F,OH)2
COLLECTION_LOCALITY: Madagascar
ORIGINAL_DONOR: National Museum of Natural History
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Pink, lilac and gray mica.
IMAGE_OF_SAMPLE:
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Trioctahedral mica
Probably a mixture of several...best matches are taeniolite and
phlogopite, but not definitive
Konnert, Judith and Marta Flohr, 1992, unpublished data, USGS Reston, VA.
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
None
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Spectral comparison to lepidolite NMNH105538 shows extra spectral features that may be due to other phases.
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1c2c3c4_ # 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: | splib04a r 2757 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 4146 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 12778 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 12790 | g.s.= |