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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 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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