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Clark et. al. 2003 USGS Open File Report 03-395
Spectral Library splib05a Sample Description

(For further information on spectrsocopy, see: http://speclab.cr.usgs.gov)

TITLE: Olivine KI3054 Fo66 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: KI3054

MINERAL_TYPE: Nesosilicate

MINERAL: Olivine (Olivine group)

FORMULA: Mg2SiO4-Fe2SiO4 Fo66

FORMULA_HTML: Mg2Si4-Fe2SiO4 Fo66

COLLECTION_LOCALITY: Kiglapait intrusive, Labrador

ORIGINAL_DONOR: S.A. Morse, Universith 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 (fo66) is part of a of solid solution suite of Kiglapait samples.

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 36.30 wt% SiO2
COMPOSITION: TiO2 0.03 wt% TiO2
COMPOSITION: Cr2O3 0.03 wt% Cr2O3
COMPOSITION: FeO 30.59 wt% FeO
COMPOSITION: NiO 0.09 wt% NiO
COMPOSITION: MnO 0.05 wt% MnO
COMPOSITION: MgO 32.62 wt% MgO
COMPOSITION: CaO 0.04 wt% CaO
COMPOSITION: Total 99.75 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 visually and spectrally a pure olivine 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: 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 3658 0.2-3.0µm 200 g.s.= 25 µm
LIB_SPECTRA: splib05a r 5218 0.2-3.0µm 200 g.s.=


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