Amorphous graphite—also known as earthy graphite, microcrystalline graphite, or black lead powder—does not actually lack graphite crystals as its name might suggest; rather, its crystals are extremely small, forming a microcrystalline structure. X-ray analysis reveals that amorphous earthy graphite

Crystalline graphite (or flake graphite) is essentially natural graphite, referring to graphite minerals found in nature that possess a well-developed crystal structure and visible crystal forms; man-made materials are typically referred to as "artificial graphite" or "synthetic graphite" and are ge