http://ars.els-cdn.com/content/image/1-s2.0-S0169136806000746-gr5.jpgSee hereThere are very few true "world-class" deposits its a much overused term - they are rare and significant in both terms of grade and tonnage
CC9 Chariot locks in high-potential drill target at Black Mountain, one of the USA's largest lithium landholdings