albite
noun
al·bite ˈal-ˌbīt 
: a triclinic usually white mineral of the feldspar group consisting of a sodium aluminum silicate
albitic
al-ˈbi-tik
adjective 
Word History
Etymology
borrowed from Swedish albit, from Latin albus "white, light-colored" + Swedish -it -ite entry 1 — more at album
Note: The name was introduced by the Swedish mineralogist Johan Gottlieb Gahn (1745-1818) and Jakob berzelius in "Undersökning af några i grannskapet af Fahlun funna fossilier," Afhandlingar i Fysik, Kemi och Mineralogi, Fjerde delen (1815), p. 180.
First Known Use
circa 1843, in the meaning defined above