Challacolloite Mitolo D, Pinto D, Garavelli A, Bindi L, Vurro F Mineralogy and Petrology 96 (2009) 121-128 The role of the minor substitutions in the crystal structure of natural challacolloite, KPb2Cl5, and hephaistosite, TiPb2Cl5, from Vulcano (Aeolian Archipelago, Italy) Locality: rim of La Fossa Crater, Vulcano, Aeolian Archipelago, Italy _database_code_amcsd 0019022 8.8989 7.9717 12.5624 90 90.022 90 P2_1/c atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) K .50925 .04612 .16986 .94 .04133 .037548 .04300 .0436 .00680 -.0040 -.00802 Tl .50925 .04612 .16986 .06 .04133 .037548 .04300 .0436 .00680 -.0040 -.00802 Pb1 .00648 .00568 .17407 .02758 .028970 .02749 .02627 -.00269 .00084 .00165 Pb2 .25491 .43568 .99355 .02325 .019800 .02600 .02394 .0006 .00030 .0018 Cl1 .95833 .16505 .40145 .02339 .020690 .02177 .02772 -.0002 .00023 .00496 Cl2 .22255 .04028 .99909 .02470 .027570 .02419 .02226 .00027 .00110 .00081 Cl3 .54028 .17879 .41868 .97 .03344 .019800 .0330 .0475 .0012 .00212 .01600 Br3 .54028 .17879 .41868 .03 .03344 .019800 .0330 .0475 .0012 .00212 .01600 Cl4 .23668 .31119 .22053 .97 .02839 .02905 .02969 .02644 .00262 .00185 -.00156 Br4 .23668 .31119 .22053 .03 .02839 .02905 .02969 .02644 .00262 .00185 -.00156 Cl5 .76887 .34314 .18833 .93 .03278 .04210 .03043 .02584 -.00827 -.00707 .00635 Br5 .76887 .34314 .18833 .07 .03278 .04210 .03043 .02584 -.00827 -.00707 .00635