Rruffite Yang H, Jenkins R A, Downs R T, Evans S H, Tait K T The Canadian Mineralogist 49 (2011) 877-884 Rruffite, Ca2Cu(AsO4)2*2H2O, a new member of the roselite group, from Tierra Amarilla, Chile Locality: the Maria Catalina mine, Tierra Amarilla, Chile _database_code_amcsd 0018388 5.8618 12.7854 5.7025 90 109.425 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) Ca .56418 .12303 .21155 .0100 .0089 .0094 .0119 -.0003 .0038 -.0010 Cu 0 0 0 .0128 .0109 .0121 .0136 .0001 .0016 -.0044 As .22626 .12128 .54652 .0080 .0074 .0076 .0084 .0002 .0019 -.0001 O1 .2381 .0379 .3183 .0119 .0102 .0135 .0118 -.0006 .0032 -.0048 O2 .3018 .0542 .8149 .0112 .0124 .0104 .0106 .0011 .0037 .0026 O3 .9533 .1749 .4816 .0121 .0083 .0126 .0142 .0041 .0020 .0001 O4 .4468 .2067 .5496 .0126 .0114 .0116 .0156 -.0049 .0056 -.0024 O5 .8261 .1361 .9559 .0112 .0112 .0095 .0105 -.0009 .0004 -.0011 H1 .731 .141 .855 .04 H2 .897 .197 .983 .04