Forsterite CL/TEM measurement, 120 keV e- beam, LN2 (77K), Benstock et al. 1997

Measurement details

Reference Benstock et al. 1997
Benstock E. J., Buseck P. R. & Steele I. M. (1997). Cathodoluminescence of meteoritic and synthetic forsterite at 296 and 77 K using TEM. American Mineralogist, 82(3-4), 310-315. DOI: https://doi.org/10.2138/am-1997-3-409
Material Forsterite [ Mg2SiO4 ]
Specimen temperature LN2 (77K)
Technique Cathodoluminescence (CL), using a Transmission Electron Microscope (TEM)
Instrument Philips 400T TEM
Probe 120 keV electron beam
Probe diameter 14 μm
Slit width 500 μm
Lines Cr 700 — 800 nm, Cr3+ 693 nm, 698 nm, 708 nm, 715 nm, 721 nm, 740 nm

Composition

Nominal composition of Forsterite [ Mg2SiO4 ].
Element Atoms At% Wt%
Mg 2 28.6 34.6
Si 1 14.3 20
O 4 57.1 45.5