Sylvite
Walker D, Verma P K, Cranswick L M D, Jones R L, Clark S M, Buhre S
American Mineralogist 89 (2004) 204-210
Halite-sylvite thermoelasticity
Sample: r57701, T = 100 C, P = 15.0 kbar, cell volume = 233.44 ang**3
_database_code_amcsd 0003207
6.1573 6.1573 6.1573 90 90 90 Fm3m
atom  x  y  z
K     0  0  0
Cl   .5 .5 .5