Solid solutions and unmixing in the (Ba, K, Na)-feldspars Part I - The albite-celsian solvus determined by ion-exchange experiments
Lagache, Martine; Catel, Nicole
European Journal of Mineralogy Volume 4 Number 1 (1992), p. 209 - 212
published: Feb 13, 1992
manuscript accepted: Jul 8, 1991
manuscript received: Dec 18, 1990
ArtNo. ESP147050401015, Price: 29.00 €
Abstract The solvus of the albite-celsian series near the albite end-member has been determined by exchange reactions between albite and a barium chloride solution. The solvus extends between Ab98 Cn2 and Ab48 Cn52 at 450°C, 1.5 kbar, Ab97 Cn3 and Ab60 Cn40 at 600°C, 1.5 kbar and Ab97 Cn3 and Ab82 Cn18 at 750°C, 2 kbar. The two solvi (alkali feldspars and albite-celsian series) are used to estimate the range of unmixing in the ternary system.