Yurmarinite Pekov I V, Zubkova N V, Yapaskurt V O, Belakovskiy D I, Lykova I S, Vigasina M F, Sidorov E G, Pushcharovsky D Y Mineralogical Magazine 78 (2014) 905-917 New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. I. Yurmarinite, Na7(Fe3+,Mg,Cu)4(AsO4)6 Locality: Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia _database_code_amcsd 0020582 13.7444 13.7444 18.3077 90 90 120 R-3c atom x y z occ Uiso Na1 .0 .0 .0 .9357 .0077 Ca1 .0 .0 .0 .04 .0077 K1 .0 .0 .0 .0314 .0077 Na2 .78711 .01548 .05276 .9357 .0263 Ca2 .78711 .01548 .05276 .04 .0263 K2 .78711 .01548 .05276 .0314 .0263 Fe1 .0 .0 .25 .62 .0080 Mg1 .0 .0 .25 .175 .0080 Cu1 .0 .0 .25 .12 .0080 Al1 .0 .0 .25 .0575 .0080 Zn1 .0 .0 .25 .035 .0080 Ti1 .0 .0 .25 .0025 .0080 Mn1 .0 .0 .25 .0025 .0080 Fe2 .77801 .0 .25 .62 .00892 Mg2 .77801 .0 .25 .175 .00892 Cu2 .77801 .0 .25 .12 .00892 Al2 .77801 .0 .25 .0575 .00892 Zn2 .77801 .0 .25 .035 .00892 Ti2 .77801 .0 .25 .0025 .00892 Mn2 .77801 .0 .25 .0025 .00892 As .18108 -.01128 .145958 .99 .00890 P .18108 -.01128 .145958 .0033 .00890 V .18108 -.01128 .145958 .0017 .00890 O1 .52485 .06215 .15330 .0164 O2 .71532 .06116 .17686 .0158 O3 .59857 .19631 .02568 .0122 O4 .01471 .15464 .06052 .0206