Grigorievite Pekov I V, Zubkova N V, Yapaskurt V O, Kartashov P M, Polekhovsky Y S, Murashko M N, Pushcharovsky D Y European Journal of Mineralogy 26 (2014) 667-677 Koksharovite, CaMg2Fe3+4(VO4)6, and grigorievite, Cu3Fe3+2Al2(VO4)6, two new howardevansite-group minerals from volcanic exhalations Locality: Great Tolbachik Fissure Eruption, Kamchatka, Russia _database_code_amcsd 0020493 8.0217 9.6858 6.5475 103.645 102.369 106.281 P-1 atom x y z occ Uiso Cu1 .79085 .79860 .77639 .68 .0182 Mg1 .79085 .79860 .77639 .32 .0182 Cu2 0 .5 .5 .63 .0309 Ca1 0 .5 .5 .20 .0309 Fe1 .54933 .39565 .12342 .47 .0091 Al1 .54933 .39565 .12342 .43 .0091 Ti1 .54933 .39565 .12342 .1 .0091 Al2 .30022 .98867 .4595 .67 .0088 Fe2 .30022 .98867 .4595 .33 .0088 V1 .40396 .66669 .38827 .99 .0112 P1 .40396 .66669 .38827 .01 .0112 V2 .84538 .73827 .28091 .99 .0104 P2 .84538 .73827 .28091 .01 .0104 V3 .76808 .12465 .09204 .99 .0109 P3 .76808 .12465 .09204 .01 .0109 O1 .4422 .8589 .4213 .0121 O2 .4752 .3484 .3720 .0168 O3 .8076 .5554 .2923 .0205 O4 .2218 .1610 .5065 .0163 O5 .2675 .0102 .1641 .0172 O6 .4645 .5752 .1647 .0154 O7 .7352 .7389 .0250 .0173 O8 .0648 .8258 .3316 .0185 O9 .1895 .5813 .3599 .0254 O10 -.0085 .2379 .2063 .0305 O11 .7079 .0296 .2633 .0175 O12 .6499 .2404 .0710 .0227