Chesnokovite Pekova I V, Chukanov N V, Zadov A E, Zubkova N V, Pushcharovsky D Yu Geology of Ore Deposits 49 (2007) 727-738 Chesnokovite, Na2[SiO2(OH)2]*8H2O, the first natural sodium orthosilicate from the Lovozero alkaline pluton, Kola Peninsula: Description and crystal structure of a new mineral species Locality: Mt. Kedykverpakhk, Lovozero alkaline pluton, Kola Peninsula, Russia _database_code_amcsd 0012665 11.7119 19.973 11.5652 90 90 90 Ibca atom x y z Uiso Na .1244 .1817 .4143 .038 Si .3770 0 .25 .028 O1 .2898 .0540 .1696 .039 O2 .4469 .0541 .3319 .030 O3 .119 .0379 .4339 .033 O4 .1122 .1649 .2061 .025 O5 .4140 .1755 .0536 .044 O6 .3215 .1905 .3848 .047 H1 .27 .016 .11 .1 H2 .09 .035 .49 .1 H3 .04 .013 .39 .1 H4 .05 .138 .209 .1 H5 .17 .134 .205 .1 H6 .37 .133 .093 .1 H7 .40 .167 -.027 .1 H8 .38 .159 .365 .1 H9 .35 .238 .339 .1