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 <60µm, prior to spectral characterization. Fe-rich (Fo11) end member of a suite of Kiglapait olivines.
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:
None
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: EM(WDS) # XRF, EM(WDS), ICP(Trace), WChem
| 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: 1_2_3_4_
LIB_SPECTRA_HED: where Wave Range Av_Rs_Pwr Comment
LIB_SPECTRA: splib04a r 3647 0.2-3.0µm 200 g.s.=30µm
LIB_SPECTRA: splib05a r ____ 0.2-3.0µm 200 g.s.=
LIB_SPECTRA: splib06a r ____ 1.5-25µm 250 g.s.=