Howlite Griffen D T American Mineralogist 73 (1988) 1138-1144 Howlite, Ca2SiB5O9(OH)5: Structure refinement and hydrogen bonding _database_code_amcsd 0001197 12.820 9.351 8.608 90 104.84 90 P2_1/c atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ca1 .11738 .18339 .14917 .0080 .0080 .0091 -.0008 .0026 -.0006 Ca2 .41192 .82088 .52253 .0071 .0088 .0101 .0010 .0023 .0016 Si .14127 .55510 .01101 .0054 .0055 .0054 .0003 .0018 -.0001 B1 .0371 .4728 .2559 .0061 .0078 .0066 .0004 .0015 -.0003 B2 .3226 .3834 .0268 .0061 .0070 .0064 .0001 .0012 .0000 B3 .4927 .4209 .2508 .0073 .0073 .0089 .0002 .0019 .0010 B4 .3425 .2623 .2862 .0074 .0074 .0080 -.0001 .0022 .0004 B5 .1573 .6489 .4697 .0072 .0069 .0077 -.0005 .0014 -.0006 O1 .0803 .5138 -.1738 .0059 .0117 .0067 .0003 .0006 -.0015 O2 .1251 .7217 .0502 .0146 .0058 .0108 .0021 .0062 .0015 O3 .0992 .4525 .1349 .0098 .0078 .0093 .0008 .0058 .0009 O4 .2687 .5237 .0306 .0057 .0065 .0101 .0006 .0017 -.0004 O5 .0614 .5997 .3529 .0075 .0078 .0095 .0001 .0008 -.0025 O6 .4387 .4088 .0801 .0054 .0110 .0064 -.0002 .0011 .0007 O7 .2914 .1692 .3631 .0086 .0106 .0064 -.0020 .0011 .0019 O8 .2870 .2812 .1290 .0080 .0096 .0086 -.0022 .0012 .0025 O9 .4372 .3332 .3539 .0076 .0093 .0076 -.0021 .0017 .0004 O10 .4964 .5711 .2940 .0175 .0087 .0134 -.0019 .0016 -.0008 O11 .6014 .3568 .2724 .0058 .0115 .0130 -.0006 .0008 .0014 O12 .2477 .6851 .3994 .0104 .0156 .0106 -.0037 .0046 -.0016 O13 .1975 .5421 .5987 .0122 .0104 .0118 -.0005 .0007 .0039 O14 .0549 .3363 .3524 .0087 .0083 .0088 -.0007 .0022 .0021 H10 .534 .593 .385 .0371 H11 .345 .598 .681 .0308 H12 .225 .685 .298 .0522 H13 .185 .574 -.308 .0367 H14 .007 .704 -.342 .0258