Umbrianite Sharygin V V, Pekov I V, Zubkova N V, Khomyakov A P, Stoppa F, Pushcharovsky D Y European Journal of Mineralogy 25 (2013) 655-669 Umbrianite, K7Na2Ca2[Al3Si10O29]F2Cl2, a new mineral species from melilitolite of the Pian di Celle volcano, Umbria, Italy Locality: Pian di Celle volcano, Umbria, Italy _database_code_amcsd 0020030 7.0618 38.420 6.5734 90 90 90 *Pmmn .25 .25 0 atom x y z occ Uiso K(1) .25 .33849 .1112 .0617 K(2) .25 .25 -.2775 .80 .0351 Na(2) .25 .25 -.2775 .08 .0351 K(3) .25 .41285 -.2824 .90 .0353 Na(3) .25 .41285 -.2824 .06 .0353 K(4) .25 .6602 .5198 .45 .035 K(4') .1570 .6603 .523 .25 .049 Na .0 .5 .5 .70 .0232 Ca .0 .5 .5 .30 .0232 Si(1) .25 .75 .3961 .5 .0144 Al(1) .25 .75 .3961 .5 .0144 Si(2) .25 .70109 .0231 .0234 Si(3) .25 .56856 -.5795 .0155 Si(4) -.0330 .57166 -.2193 .0114 Si(5) -.0157 .75 .7805 .55 .0283 Al(5) -.0157 .75 .7805 .30 .0283 Fe(5) -.0157 .75 .7805 .15 .0283 Al .25 .61619 .0332 .0165 Ca .25 .50431 -.9977 .95 .0111 Mg .25 .50431 -.9977 .05 .0111 O(1) .0631 .7146 .9075 .078 O(2) .0512 .6023 -.0887 .066 O(3) .25 .5317 -.6820 .028 O(4) .25 .6021 -.7239 .046 O(5) -.0169 .53449 -.1226 .049 O(6) .25 .6595 .0332 .070 O(7) .0582 .75 .5386 .051 O(8) .75 .75 .797 .116 O(9) .0633 .5726 -.4375 .053 O(10) .25 .7153 .2564 .044 O(11) .75 .5826 -.2625 .036 F .25 .47937 -.3176 .0247 Cl .75 .66536 .3855 .95 .099 F .75 .66536 .3855 .05 .099