What is the lead in a lead pencil made from?
Black Lead Highly Oriented Pyrolytic Graphite Highly Ordered Pyrolytic Graphite Graphite electrodes Plumbago (mineral) Flake graphite Graphite Natural graphite Graphitic HOPG
natural graphite highly ordered pyrolytic graphite graphite electrodes plumbago mineral graphite graphitic flake graphite hopg highly oriented pyrolytic graphite black lead
graphite
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Graphite