RE:RE:So When You Mill Lump/Vein Graphite You Get Flakes... PoiSonPez, I took that from the link TaKeNoTes provided from the Asbury site.
It specifically showed how lump/vein-type graphite showed FLAKE characteristics when
"milled". Here is the section:
As with all graphite materials the micro-morphology of vein graphite converges to flake structure as the particle size is decreased. This convergence is illustrated by the accompanying series of scanning electron micrographs of Asbury grade 98DC milled vein graphite:
Particles imaged in the top SEM show the elongated, needle-shaped morphology characteristic of vein graphite at this scale. Moving to the bottom SEM it can clearly be seen that the individual needle shaped particles are made up of graphite having intrinsic flake morphology. This observation is especially apparent in the micrograph to the far right.
When viewed using polarized light microscopy, the oriented, needle shaped crystals that make up the mass of the vein are apparent as shown in the accompanying photomicrograph (field width approximately 300 micrometers).