Granite may have more alkali feldspar, whereas a granite derived from partial melting of metaigneous rocks may be richer in plagioclase. It is on this basis that the modern "alphabet" classification schemes are based. The letter-based Chappell & White classification system was proposed initially to divide granites into I-type (igneous source) granite and S-type (sedimentary sources). Both types are produced by partial melting of crustal rocks, either metaigneous rocks or metasedimentary rocks. M-type granite was later proposed to cover those granites that were clearly sourced from crystallized mafic magmas, generally sourced from the mantle. However, this proposal has been rejected by
Rock Lords "Though he's a robot, Nuggit is worth his weight in gold! He's smaller than the other rock warriors but brave and bold beyond his size. Nuggit is very proud of his shiny finish. Nuggit's Tri-Gun does triple duty: the top barrel hypnotizes; the second barrel paralyzes; the third barrel revives the unlucky victim for questioning." Granite (Japan: Guts Rock) Rock Type: Granite Bio: "A happy-go-lucky rock with a ready laugh, Granite is truly a "gentle giant". But put him in the thick of the fight and he's one of the most fearsome combatants on the battlefield. Despite its ordinary appearance,