Sarkinite Dal Negro A, Giuseppetti G, Pozas J M M Tschermaks Mineralogische und Petrographische Mitteilungen 21 (1974) 246-260 The crystal structure of sarkinite, Mn2AsO4(OH) _database_code_amcsd 0015650 12.779 13.596 10.208 90 108.88 90 P2_1/a atom x y z Biso Mn1 .1001 .9308 .4733 .33 Mn2 .0868 .4270 .4510 .28 Mn3 .3894 .3228 .0267 .34 Mn4 .4216 .8201 .0422 .28 Mn5 .1977 .0031 .2170 .41 Mn6 .1886 .5203 .1927 .31 Mn7 .3023 .2489 .2875 .39 Mn8 .3166 .7310 .3025 .33 As1 .42470 .07142 .12113 .05 As2 .42541 .57604 .11348 .01 As3 .07649 .17874 .37906 .01 As4 .07540 .67531 .38360 .04 O1 .1760 .1519 .3097 .51 O2 .1771 .6407 .3223 .53 O3 .3339 .0950 .2031 .63 O4 .3202 .6145 .1665 .46 O5 .4307 .1619 .0079 .43 O6 .4591 .6666 .0222 .48 O7 .4588 .2932 .2524 .35 O8 .4598 .7934 .2551 .57 O9 .1205 .2762 .4875 .57 O10 .1208 .7715 .4899 .58 O11 .0590 .0883 .4845 .41 O12 .0468 .5815 .4723 .54 O13 .0502 .4474 .2361 .54 O14 .0339 .9570 .2466 .61 O15 .3767 .4801 .0049 .54 O16 .3828 .9714 .0174 .57 OH17 .2541 .9708 .4385 .49 OH18 .3004 .4164 .3068 .58 OH19 .2078 .8389 .1962 .65 OH20 .2396 .2782 .0671 .62