Sri Lankan Graphite
Naturally occurring graphite is typically classified into three forms, viz; i) amorphous graphite, ii) flake graphite, and iii) vein graphite (Balasooriya et al., 2007) (Sinhala: ශ්රී ලංකාවේ මිනිරන් නිධි) . When considering Sri Lankan Graphite , highly crystalline vein graphite is dominant (Balasooriya et al., 2007; Dissanayake, 1981). Vein graphite deposits The vein graphite deposits in Sri Lanka are known the world over since they were first worked in 1880 (Katz, 1987). The high purity (95-98%), crystallinity, and extensive mineralization with restricted occurrences have made these deposits more valuable and special. Most of the Sri Lankan vein graphite deposits are scattered throughout the Wanni Complex which is a Precambrian high-grade metamorphic terrain dominated by granulite-facies rocks (Katz, 1987; Touzain et al., 2010). Sri Lanka's natural vein graphite is found in various morphologies, with different structural and physical characteristics (Balasooriya et al., 2007). They c…
