additional reading can be found on our our peer explorer BBR's potentially soon-to-be-partner processing company RS Mines
they talk about the benefits of Sri Lankan vein graphite in all aspects regarding quality, purity and graphene potential
http://graphite.com.co/latest-news-about-graphite/
http://graphite.com.co/about-graphene/
and of course, this fantastic thread by our resident graphite expert duke
http://hotcopper.com.au/threads/a-word-about-the-quality-of-materials.2435956/
enjoy the bedtime reading, and try not to get too excited!