Electron Microscopy of Meteoritic and Artificially Shocked Graphite.
Samples of graphite, partly converted to diamond by shock, and meteoritic graphite were studied by transmission electron microscopy. The shocked graphite remained in the form of single crystals and was mildly deformed while the diamond which had formed was anhedral and polycrystalline. The meteoritic graphite contained minor amounts of troilite (FeS) and elemental sulfur but no detectable carbon phase other than graphite.
Sciacca
T P
TP
Lipschutz
M E
ME