AB_oF8_69_a_b & a,b/a,c/a --params=6.08,0.903782894737,0.851973684211 & Fmmm D_{2h}^{23} #69 (ab) & oF8 & B24 & TlF & & J. A. A. Ketellar, Zeitschrift f\"{u}r Kristallographie - Crystalline Materials 92, 30-38 (1935) 1.0000000000000000 0.00000000000000 2.74750000000000 2.59000000000000 3.04000000000000 0.00000000000000 2.59000000000000 3.04000000000000 2.74750000000000 0.00000000000000 F Tl 1 1 Direct 0.00000000000000 0.00000000000000 0.00000000000000 F (4a) 0.50000000000000 0.50000000000000 0.50000000000000 Tl (4b)