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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Olivine KI3005 Fo11 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: KI3005
MINERAL_TYPE: Nesosilicate
MINERAL: Olivine (Olivine group)
FORMULA: Mg2SiO4-Fe2SiO4 Fo11
FORMULA_HTML: Mg2SiO4-Fe2SiO4 Fo11
COLLECTION_LOCALITY: Kiglapait intrusive, Labrador
ORIGINAL_DONOR: S.A. Morse, University of Massachusetts, Amherst
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Sample has been subjected to Franz Isodynamic Magnetic Separator, heavy liquid (Clerici) separation and hand-picking. Mineral separated is at least 98% pure olivine. Samples sieved to less than 60µm, prior to spectral characterization. Fe-rich (Fo11) end member of a suite of Kiglapait olivine's.
King, T.V.V. and W.I. Ridley, 1987, Relation of the Spectroscopic Reflectance of Olivine to Mineral Chemistry and Some Remote Sensing Implications. J. Geophys. Res., 11,457-11,469.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Not Available
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: EM(WDS) # XRF, EM(WDS), ICP(Trace), WChem
| COMPOSITION KEYWORD |
Oxide ASCII |
Amount | Weight Percent, % |
Oxide html |
|---|---|---|---|---|
| COMPOSITION: | SiO2 | 30.11 | wt% | SiO2 |
| COMPOSITION: | TiO2 | 0.07 | wt% | TiO2 |
| COMPOSITION: | Al2O3 | 0.00 | wt% | Al2O3 |
| COMPOSITION: | Cr2O3 | 0.06 | wt% | Cr2O3 |
| COMPOSITION: | FeO | 62.82 | wt% | FeO |
| COMPOSITION: | NiO | 0.12 | wt% | NiO |
| COMPOSITION: | MnO | 1.55 | wt% | Mn0 |
| COMPOSITION: | MgO | 4.42 | wt% | MgO |
| COMPOSITION: | CaO | 0.14 | wt% | CaO |
| COMPOSITION: | Total | 99.29 | wt% | |
| COMPOSITION: | O=Cl,F,S | wt% | ||
| COMPOSITION: | New Total | wt% |
COMPOSITION_TRACE:
COMPOSITION_DISCUSSION:
Microprobe analysis by W.I. Ridley, USGS Denver microprobe facility.
King, T.V.V. and W.I. Ridley, 1987, Relation of the Spectroscopic Reflectance of Olivine to Mineral Chemistry and Some Remote Sensing Implications. J. Geophys. Res., 11,457-11,469.
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
This sample is visually and spectrally a pure olivine. There may be a weak 2.3 µm alteration feature. The rest of the spectra is excellent, rating an a.
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1b2_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: | splib04a r 3647 | 0.2-3.0µm | 200 | g.s.= 30 µm |
| LIB_SPECTRA: | splib05a r 5140 | 0.2-3.0µm | 200 | g.s.= |
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