ABC2_hR4_166_a_b_c & a,c/a,x3 --params=3.5561,5.44557239673,0.2667 & R(-3)m D_{3d}^5 #166 (abc) & hR4 & F5_1 & CrNaS2 & Caswellsilverite & F. M. R. Engelsman, G. A. Wiegers, F. Jellinek, and B. van Laar, J. Solid State Chem. 6, 574-582 (1973) 1.0000000000000000 1.77805000000000 -1.02655764613300 6.45500000000000 0.00000000000000 2.05311529226500 6.45500000000000 -1.77805000000000 -1.02655764613300 6.45500000000000 Cr Na S 1 1 2 Direct 0.00000000000000 0.00000000000000 0.00000000000000 Cr (1a) 0.50000000000000 0.50000000000000 0.50000000000000 Na (1b) 0.26670000000000 0.26670000000000 0.26670000000000 S (2c) 0.73330000000000 0.73330000000000 0.73330000000000 S (2c)