feldspar pegmatites in gambia

feldspar pegmatites in gambia

Pegmatite - WikipediaRarer intermediate composition and mafic pegmatites containing amphibole, Ca-plagioclase feldspar, pyroxene, feldspathoids and other unusual minerals are known, found in recrystallised zones and apophyses associated with large layered intrusions. Crystal size is the most striking feature of pegmatites, with crystals.feldspar pegmatites in gambia,phosphorus in alkali feldspars of rare-element granitic pegmatites 771ration of the magrnas are important factors in controlling the phosphorus content of pegmatite feldspars. The phos- phorus content of pegmatites and related granitic rocks generally increases with bulk peraluminosity, as reflected by high whole-rock P2O5, and an abundance of phos- phates otier than apatite. An increase in.

feldspar pegmatites in gambia,Pegmatite - WikipediaRarer intermediate composition and mafic pegmatites containing amphibole, Ca-plagioclase feldspar, pyroxene, feldspathoids and other unusual minerals are known, found in recrystallised zones and apophyses associated with large layered intrusions. Crystal size is the most striking feature of pegmatites, with crystals.phosphorus in alkali feldspars of rare-element granitic pegmatites 771ration of the magrnas are important factors in controlling the phosphorus content of pegmatite feldspars. The phos- phorus content of pegmatites and related granitic rocks generally increases with bulk peraluminosity, as reflected by high whole-rock P2O5, and an abundance of phos- phates otier than apatite. An increase in.