Facilities

1. X-ray fluorescence spectrometry ARL 9400 Sequential XRF XP

Major elements analyses

SiO₂, Al₂O₃, TiO₂, Fe₂O₃total, MnO, MgO, CaO, Na₂O, K₂O, P₂O₅, LOI

on glass discs prepared with lithium metaborate and finely ground, ignited rock samples (2hr at 1000°C) (sample: 0.5g)

Trace elements analyses

Nb, Y, Zr, Sr, Rb, U, Th, Pb, Zn, Ni, Co, Ga, Ba, Cr, Ce

on pressed powder pellets. Matrix effects corrected with the Compton scatter or by calculating absorption coefficients (sample: 4g)

Semi-quantitative analysis

scanning of the X-ray spectrum of major and trace elements above 500ppm (sample: 4g)

2. Susceptometer

Kappabridge KLY-3S susceptometer (AGICO Inc.)

Measurements of AMS (anisotropy of magnetic susceptibility) and MS (bulk magnetic susceptibility)

Shared with F. Boulvain

3. Other techniques

Expertise in optical microscopy (reflected and transmitted light) of magmatic and metamorphic rocks

Mineralogical separation (heavy liquids, centrifugation, Frantz magnetic separation)