Calciojohillerite Pekov I V, Koshlyakova N N, Agakhanov A A, Zubkova N V, Belakovskiy D I, Vigasina M F, Turchkova A G, Sidorov E G, Pushcharovsky D Y Mineralogical Magazine 85 (2021) 215-223 New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. XV. Calciojohillerite, NaCaMgMg2(AsO4)3, a member of the alluaudite group Locality: Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia _database_code_amcsd 0020958 11.8405 12.7836 6.69165 90 112.425 90 C2/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) CaA1 .5 0 0 .70 .0192 .0245 .0105 .0145 -.0029 -.0016 .0002 NaA1 .5 0 0 .25 .0192 .0245 .0105 .0145 -.0029 -.0016 .0002 CuA1' 0 .5027 .25 .02 .006 NaA2' 0 -.00980 .25 .99 .0261 .0133 .0507 .0134 .000 .0040 .000 KA2' 0 -.00980 .25 .01 .0261 .0133 .0507 .0134 .000 .0040 .000 MgM1 0 .26340 .25 .95 .0076 .0076 .0071 .0089 .000 .0040 .000 MnM1 0 .26340 .25 .05 .0076 .0076 .0071 .0089 .000 .0040 .000 MgM2 .28625 .65740 .37724 .85 .00519 .0052 .0052 .0054 -.00007 .0023 -.00006 FeM2 .28625 .65740 .37724 .125 .00519 .0052 .0052 .0054 -.00007 .0023 -.00006 AlM2 .28625 .65740 .37724 .025 .00519 .0052 .0052 .0054 -.00007 .0023 -.00006 As1 0 .71086 .25 .95 .00595 .00652 .00518 .00573 .000 .00187 .000 P1 0 .71086 .25 .05 .00595 .00652 .00518 .00573 .000 .00187 .000 As2 .23151 .88687 .12070 .95 .00563 .00588 .00538 .00556 -.00004 .00211 -.00014 P2 .23151 .88687 .12070 .05 .00563 .00588 .00538 .00556 -.00004 .00211 -.00014 O1 .46311 .71706 .5239 .0101 .0092 .0134 .0081 -.0017 .0037 -.0020 O2 .10889 .62355 .2629 .0150 .0102 .0117 .0196 .0028 .0019 -.0053 O3 .34097 .67044 .1214 .0096 .0111 .0099 .0079 -.0032 .0039 -.0018 O4 .11777 .39710 .3199 .0111 .0072 .0099 .0157 -.0002 .0038 -.0003 O5 .21645 .81611 .3204 .0106 .0129 .0110 .0083 .0000 .0047 .0007 O6 .33719 .50319 .3958 .0114 .0123 .0074 .0148 -.0017 .0056 .0012