COL ICSD Collection Code 73364 DATE Recorded Jun 30, 1994 NAME Diammonium tecto-dialumotrisilicate MINR Natrolite - from Salesl, Czech Republic, ammonium exchanged MINR Zeolite FORM (N H4)2 (Al2 Si3 O10) = H8 Al2 N2 O10 Si3 TITL Flexibility and distortion of the collapsible framework of NAT topology: the crystal structure of NH4-exchanged natrolite REF European Journal of Mineralogy (1,1989-) EJMIE 4 (1992) 1229-1240 AUT Stuckenschmidt E, Kassner˙D, Joswig˙W, Baur˙W˙H CELL a=17.899(2) b=18.390(2) c=6.529(1) à=90.0 á=90.0 ç=90.0 V=2149.1 Z=8 SGR C 1 1 21 (4) - monoclinic CLAS 2 (Hermann-Mauguin) - C2 (Schoenflies) PRS mC200 ANX A2B3X2Y10 PARM Atom__No OxStat Wyck -----X----- -----Y----- -----Z----- -SOF- Si 1 4.000 4a 0.49966(7) 0.49286(3) 0.0007(2) Si 2 4.000 4a 0.25710(3) 0.75007(7) 0.7496(2) Si 3 4.000 4a 0.34558(4) 0.28565(5) 0.6255(2) Si 4 4.000 4a 0.64876(4) 0.71517(5) 0.6245(2) Si 5 4.000 4a 0.40258(5) 0.53316(5) 0.3731(1) Si 6 4.000 4a 0.09972(5) 0.96398(5) 0.3742(2) Al 1 3.000 4a 0.46489(4) 0.40239(5) 0.6169(2) Al 2 3.000 4a 0.53541(6) 0.59234(5) 0.6170(2) Al 3 3.000 4a 0.28664(6) 0.65342(6) 0.3645(2) Al 4 3.000 4a 0.21584(6) 0.84406(6) 0.3653(2) O 1 -2.000 4a 0.5116(1) 0.5629(1) 0.8579(4) O 2 -2.000 4a 0.4839(1) 0.4191(1) 0.8726(4) O 3 -2.000 4a 0.2687(1) 0.6772(1) 0.6196(4) O 4 -2.000 4a 0.2409(1) 0.8211(1) 0.6146(4) O 5 -2.000 4a 0.4297(1) 0.3147(1) 0.5870(4) O 6 -2.000 4a 0.5652(1) 0.6820(1) 0.6280(4) O 7 -2.000 4a 0.3184(1) 0.5635(1) 0.3569(5) O 8 -2.000 4a 0.1843(1) 0.9335(1) 0.3604(5) O 9 -2.000 4a 0.4015(1) 0.4655(1) 0.5275(5) O 10 -2.000 4a 0.6022(1) 0.5382(1) 0.5054(5) O 11 -2.000 4a 0.6496(1) 0.7872(1) 0.7583(5) O 12 -2.000 4a 0.3505(1) 0.2179(1) 0.7805(4) O 13 -2.000 4a 0.2955(1) 0.3487(1) 0.7227(4) O 14 -2.000 4a 0.7072(1) 0.6561(1) 0.7049(4) O 15 -2.000 4a 0.4604(1) 0.5948(1) 0.4480(4) O 16 -2.000 4a 0.5439(1) 0.4052(2) 0.4688(4) O 17 -2.000 4a 0.3132(1) 0.2613(2) 0.3998(4) O 18 -2.000 4a 0.6674(1) 0.7334(1) 0.3803(3) O 19 -2.000 4a 0.5748(2) 0.4829(1) 0.1414(4) O 20 -2.000 4a 0.4264(1) 0.5064(1) 0.1476(4) NH4 1 -3.000 4a 0.4474(1) 0.2852(1) 0.0900(3) H 1 1.000 4a 0.425(1) 0.287(1) 0.224(3) H 2 1.000 4a 0.454(1) 0.3353(9) 0.054(4) H 3 1.000 4a 0.495(1) 0.264(1) 0.091(3) H 4 1.000 4a 0.415(1) 0.261(1) 0.001(3) NH4 2 -3.000 4a 0.4741(1) 0.8104(1) 0.6512(4) H 5 1.000 4a 0.509(1) 0.837(1) 0.740(3) H 6 1.000 4a 0.454(1) 0.840(1) 0.547(3) H 7 1.000 4a 0.429(1) 0.789(1) 0.719(3) H 8 1.000 4a 0.495(1) 0.771(1) 0.583(3) NH4 3 -3.000 4a 0.7208(2) 0.4438(2) 0.8947(5) H 9 1.000 4a 0.731(1) 0.410(1) 0.786(3) H 10 1.000 4a 0.725(1) 0.422(1) 0.027(3) H 11 1.000 4a 0.752(1) 0.486(1) 0.886(4) H 12 1.000 4a 0.671(1) 0.461(1) 0.863(4) NH4 4 -3.000 4a 0.2940(2) 0.5437(2) 0.8640(7) H 13 1.000 4a 0.277(2) 0.576(1) 0.762(4) H 14 1.000 4a 0.334(1) 0.516(1) 0.817(5) H 15 1.000 4a 0.309(2) 0.571(1) 0.978(3) H 16 1.000 4a 0.252(1) 0.514(2) 0.909(4) WYCK a34 ITF Si 1 U=0.0088 ITF Si 2 U=0.0103 ITF Si 3 U=0.0081 ITF Si 4 U=0.0077 ITF Si 5 U=0.0084 ITF Si 6 U=0.0092 ITF Al 1 U=0.0081 ITF Al 2 U=0.0082 ITF Al 3 U=0.0086 ITF Al 4 U=0.0086 ITF O 1 U=0.0152 ITF O 2 U=0.0142 ITF O 3 U=0.0179 ITF O 4 U=0.0187 ITF O 5 U=0.0112 ITF O 6 U=0.0102 ITF O 7 U=0.012 ITF O 8 U=0.012 ITF O 9 U=0.017 ITF O 10 U=0.0185 ITF O 11 U=0.0162 ITF O 12 U=0.0131 ITF O 13 U=0.0163 ITF O 14 U=0.0163 ITF O 15 U=0.0125 ITF O 16 U=0.0176 ITF O 17 U=0.0159 ITF O 18 U=0.0142 ITF O 19 U=0.019 ITF O 20 U=0.017 ITF N 1 U=0.0203 ITF H 1 U=0.0203 ITF H 2 U=0.0203 ITF H 3 U=0.0203 ITF H 4 U=0.0203 ITF N 2 U=0.0204 ITF H 5 U=0.0204 ITF H 6 U=0.0204 ITF H 7 U=0.0204 ITF H 8 U=0.0204 ITF N 3 U=0.0301 ITF H 9 U=0.0301 ITF H 10 U=0.0301 ITF H 11 U=0.0301 ITF H 12 U=0.0301 ITF N 4 U=0.038 ITF H 13 U=0.038 ITF H 14 U=0.038 ITF H 15 U=0.038 ITF H 16 U=0.038 RVAL 0.047