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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Oligoclase HS143 Plagioclase DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: HS143
MINERAL_TYPE: Tectosilicate
MINERAL: Oligoclase (Plagioclase, Feldspar group)
FORMULA: (Na,Ca)Al(Al,Si)Si2O8
FORMULA_HTML: (Na,Ca)Al(Al,Si)Si2O8
COLLECTION_LOCALITY: Norway
ORIGINAL_DONOR: Hunt and Salisbury Collection
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Most analyses contain small amounts of Na, but a complete solid solution series is possible from orthoclase toward intermediate albite. Crystallizes at intermediate temperatures and has a partially ordered Al-Si distribution. Sieve interval 74-250µm.
IMAGE_OF_SAMPLE:
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Albite + microcline (s) (Norma Vergo)
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE:
COMPOSITION_DISCUSSION:
No compositional analyses.
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
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 3548 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 5025 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 512 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 524 | g.s.= |