Hydroxyledgrewite Galuskin E V, Lazic B, Armbruster T, Galuskina I O, Pertsev N N, Gazeev V M, Wlodyka R, Dulski M, Dzierzanowski P, Zadov A E, Dubrovinsky L S American Mineralogist 97 (2012) 1998-2006 Edgrewite Ca9(SiO4)4F2-hydroxyledgrewite Ca9(SiO4)4(OH)2, a new series of calcium humite-group minerals from altered xenoliths in the ignimbrite of Upper Chegem caldera, Northern Caucasus, Kabardino-Balkaria, Russia Locality: Upper Chegem caldera, Northern Caucasus, Kabardino-Balkaria, Russia _database_code_amcsd 0019558 5.0672 11.3545 15.3941 100.587 90 90 P2_1/b atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ca1 .5 0 .5 .00884 .00786 .01119 .00793 .00046 -.00111 .00293 Ca2 .49509 .946623 .273691 .00896 .00786 .01000 .00823 .00077 .00119 -.00042 Ca3 .00492 .136528 .172791 .00835 .00902 .00734 .00887 .00047 -.00022 .00193 Ca4 .50779 .254077 .388989 .00798 .00870 .00686 .00835 -.00025 -.00018 .00133 Ca5 .49252 .871677 .042505 .00889 .00966 .00912 .00793 .00025 -.00081 .00165 Si1 .07117 .06837 .389501 .00639 .00570 .00672 .00670 .00009 -.00008 .00109 Si2 .07545 .17905 .834060 .00666 .00596 .00678 .00712 .00000 .00019 .00099 O1 .75075 .06615 .38795 .00930 .0063 .0113 .0104 .0003 -.0003 .0021 O2 .29857 .43467 .38816 .00824 .0083 .0068 .0097 -.0002 .0000 .0016 O3 .20261 .11343 .30367 .00882 .0087 .0100 .0083 -.0005 .0002 .0030 O4 .20156 .15466 .47629 .00917 .0089 .0092 .0089 -.0005 -.0002 .0003 O5 .25522 .32029 .16366 .00967 .0068 .0104 .0117 .0000 -.0005 .0019 O6 .79505 .95277 .16192 .00910 .0097 .0070 .0105 .0001 .0003 .0014 O7 .70380 .28052 .25421 .00910 .0093 .0099 .0083 .0006 .0000 .0024 O8 .70743 .23048 .08132 .00904 .0087 .0091 .0086 .0001 .0001 -.0002 O9 .2309 .04123 .0463 .608 .0100 F9 .2672 .0464 .0594 .392 .0100 H1 .091 -.012 .023 .60 .22