: Plummer, Charles C.&Carlson, Diane H. (2007). Physical
Geology (p.56). New York:McGraw Hill.
KFeMg
(2)SiO26577()
Classification of commom igneous rocks
: Hamblin, K. W. & Christiansen, H. E. (2001). Earth’s dynamic
system (p.83). New Jersey: Prentice Hall.