A7B2C2_mC22_12_aij_h_i & a,b/a,c/a,beta,y2,x3,z3,x4,z4,x5,y5,z5 --params=6.65,1.29563909774,0.704661654135,102.2,0.30503,0.38654,0.22171,0.22108,-0.08762,0.23655,0.15499,0.71826 & C2/m C_{2h}^{3} #12 (ahi^2j) & mC22 & $S2_{1}$ & [Sc,Y]2Si2O7 & Thortveitite & R. Bianchi et al., Am. Mineral. 73, 601-607 (1988) 1.00000000000000 3.32500000000000 -4.30800000000000 0.00000000000000 3.32500000000000 4.30800000000000 0.00000000000000 -0.99026799618995 0.00000000000000 4.58017088062465 O Sc Si 7 2 2 Direct 0.00000000000000 0.00000000000000 0.00000000000000 O (2a) 0.38654000000000 0.38654000000000 0.22171000000000 O (4i) -0.38654000000000 -0.38654000000000 -0.22171000000000 O (4i) 0.08156000000000 0.39154000000000 0.71826000000000 O (8j) -0.39154000000000 -0.08156000000000 -0.71826000000000 O (8j) -0.08156000000000 -0.39154000000000 -0.71826000000000 O (8j) 0.39154000000000 0.08156000000000 0.71826000000000 O (8j) -0.30503000000000 0.30503000000000 0.50000000000000 Sc (4h) 0.30503000000000 -0.30503000000000 0.50000000000000 Sc (4h) 0.22108000000000 0.22108000000000 -0.08762000000000 Si (4i) -0.22108000000000 -0.22108000000000 0.08762000000000 Si (4i)