Eckermannite Oberti R, Boiocchi M, Hawthorne F C, Ball N A, Harlow G E American Mineralogist 100 (2015) 909-914 Eckermannite revised: The new holotype from the Jade Mine Tract, Myanmar-crystal structure, mineral data, and hints on the reasons for the rarity of eckermannite Note: Sample AMNH H108401 Locality: Jade Mine Tract, Kachin Province, Myanmar _database_code_amcsd 0020422 9.8087 17.8448 5.2905 90 103.6600 90 C2/m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Na1 0 .27541 .5 .945 .0192 .0211 .0171 .0217 0 .0099 0 Ca1 0 .27541 .5 .055 .0192 .0211 .0171 .0217 0 .0099 0 Na2 0 .5 0 .289 .0207 .0098 .0300 .0276 0 .0150 0 K2 0 .5 0 .021 .0207 .0098 .0300 .0276 0 .0150 0 Na3 .0259 .5 .0717 .118 .0381 .0370 .0416 .0328 0 .0026 0 K3 .0259 .5 .0717 .009 .0381 .0370 .0416 .0328 0 .0026 0 Na4 0 .4733 0 .207 .0392 .0394 .0139 .0769 0 .0380 0 K4 0 .4733 0 .014 .0392 .0394 .0139 .0769 0 .0380 0 Mg1 0 .09002 .5 .95 .0102 .0107 .0108 .0088 0 .0019 0 Fe1 0 .09002 .5 .05 .0102 .0107 .0108 .0088 0 .0019 0 Mg2 0 .18130 0 .512 .0103 .0097 .0113 .0096 0 .0018 0 Al1 0 .18130 0 .31 .0103 .0097 .0113 .0096 0 .0018 0 Fe2 0 .18130 0 .178 .0103 .0097 .0113 .0096 0 .0018 0 Mg3 0 0 0 .96 .0098 .0110 .0098 .0078 0 .0010 0 Fe3 0 0 0 .03 .0098 .0110 .0098 .0078 0 .0010 0 Mn3 0 0 0 .01 .0098 .0110 .0098 .0078 0 .0010 0 Si1 .27930 .08630 .29240 .0085 .0083 .0094 .0074 -.0003 .0009 -.0002 Si2 .28706 .17250 .80083 .0093 .0098 .0098 .0080 -.0011 .0016 .0001 O1 .11100 .08805 .21287 .0108 .0089 .0132 .0102 -.0013 .0022 -.0019 O2 .11802 .16990 .73412 .0118 .0110 .0118 .0110 0 -.0010 -.0005 O3 .10828 0 .70978 .985 .0134 .0116 .0144 .0135 0 .0017 0 F3 .10828 0 .70978 .015 .0134 .0116 .0144 .0135 0 .0017 0 O4 .36274 .25079 .79757 .0147 .0197 .0113 .0137 -.0041 .0052 .0002 O5 .34970 .12893 .08338 .0130 .0097 .0181 .0105 -.0006 .0008 .0038 O6 .34156 .11827 .58486 .0138 .0125 .0182 .0098 .0003 .0009 -.0034 O7 .33725 0 .28952 .0146 .0138 .0106 .0190 0 .0032 0 H1 .2036 0 .7404 .985 .013