Nekoite Alberti A, Galli E American Mineralogist 65 (1980) 1270-1276 The structure of nekoite, Ca3Si6O15*7H2O, a new type of sheet silicate Locality: Caxias do Sul, Rio Grande do Sul, Brazil _database_code_amcsd 0000803 7.588 9.793 7.339 111.77 103.50 86.53 P1 atom x y z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ca1 .5366 .1658 .4731 0.0136 0.0010 0.0075 0.0002 0.0013 0.0006 Ca2 .4671 -.1608 .5595 0.0133 0.0012 0.0068 0.0008 0.0024 0.0008 Ca3 .4493 -.1628 .0297 0.0138 0.0002 0.0072 0.0011 0.0016 0.0012 Si1 .1572 .1374 .0791 0.9 Si2 -.1287 -.1229 -.0428 1.7 Si3 -.1380 -.1058 .3978 1.0 Si4 .1602 .1414 .6624 1.2 Si5 .1802 .3783 .4897 1.2 Si6 .0695 .7051 .6358 1.3 O1 -.0218 .0291 -.0046 2.5 O2 .1023 .2796 .2485 2.2 O3 -.0366 -.2616 -.1835 2.1 O4 .3357 .0605 .1573 2.6 O5 -.3354 -.1078 -.1182 2.1 O6 -.0921 -.1487 .1810 2.9 O7 .1717 .1939 -.0926 1.7 O8 -.0323 .0384 .5439 2.6 O9 -.0697 -.2401 .4612 1.5 O10 .1169 .2931 .6219 1.4 O11 -.3558 -.0813 .3768 1.5 O12 .3313 .0589 .5923 2.3 O13 .0751 .5289 .5339 1.6 O14 .3995 .3923 .5464 2.2 O15 .2543 .7873 .7148 3.7 Wat1 .5054 -.4210 -.0770 3.9 Wat2 .5499 -.4132 .4586 4.9 Wat3 .7084 .2084 .8207 8.0 Wat4 .7141 .2183 .2877 7.4 Wat5 .0825 .5093 .0357 6.7 Wat6 .7598 .4588 .1661 5.2 Wat7 .2745 -.2432 .2251 2.2