Halite-sylvite thermoelasticity

• DOI: 10.2138/am-2004-0124
• Publication Date: 2015-09-25T23:32:51Z
• Authors: David Walker; Pramod K. Verma; Lachlan M.D. Cran...; Raymond L. Jones; Simon M. Clark; Stephan Buhre
• Keywords: Halite; Maxima and minima

Unit-cell volumes of four single-phase intermediate halite-sylvite solid solutions have been measured to pressures and temperatures ~28 kbar ~700 °C. Equation-of-state fitting the data yields thermal expansion compressibility as a function composition across chloride series. The variation product α0·K0 is linear (ideal) in between accepted values for halite sylvite. Taken separately, individual α0 K0 are not composition. shows maximum near consolute (XNaCl = 0.64) that exceeds value either end-member. There corresponding minimum K0. fact variable (and incidentally so well behaved be series) reinforces significance complementary maxima minima (significantly, composition). These extrema provide an example properties do follow simply from end-members.