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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Olivine KI4143 Fo41 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: KI4143
MINERAL_TYPE: Nesosilicate
MINERAL: Olivine (Olivine group)
FORMULA: Mg2SiO4-Fe2SiO4 Fo41
FORMULA_HTML: Mg2Si4-Fe2SiO4 Fo41
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 100% pure olivine. Samples sieved to less than 60µm, prior to spectral characterization. Sample is part of a of solid solution suite of Kiglapait samples. Sample is Fo41.
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.
IMAGE_OF_SAMPLE:
NO PHOTO
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 | 33.15 | wt% | SiO2 |
| COMPOSITION: | TiO2 | 0.04 | wt% | TiO2 |
| COMPOSITION: | Cr2O3 | 0.04 | wt% | Cr2O3 |
| COMPOSITION: | FeO | 47.65 | wt% | FeO |
| COMPOSITION: | NiO | 0.10 | wt% | NiO |
| COMPOSITION: | MnO | 1.23 | wt% | MnO |
| COMPOSITION: | MgO | 18.43 | wt% | MgO |
| COMPOSITION: | CaO | 0.20 | wt% | CaO |
| COMPOSITION: | Total | 100.51 | wt% | |
| COMPOSITION: | O=Cl,F,S | wt% | #correction for Cl, F, S | |
| COMPOSITION: | New Total | wt% |
COMPOSITION_TRACE:
COMPOSITION_DISCUSSION:
Microprobe analysis by W.I. Ridley, USGS 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 is a pure mineral separate. There are weak 2.3-µm alteration features, The rest of the spectrum rates an a.
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1b2b3b4b # 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 3713 | 0.2-3.0µm | 200 | g.s.= 25 µm |
| LIB_SPECTRA: | splib05a r 5179 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 17134 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 17147 | g.s.= |