Muscovite-3T Guven N, Burnham C W Zeitschrift fur Kristallographie 125 (1967) 163-183 The crystal structure of 3T muscovite Locality: in granodiorite near Sunrise Copper Prospect, Sultan Basin, Snohomish County, Washington, USA _database_code_amcsd 0010646 5.1963 5.1963 29.9705 90 90 120 P3_112 atom x y z occ Biso K .130 -.130 5/6 .90 1.73 Na .130 -.130 5/6 .06 1.73 Ca .130 -.130 5/6 .02 1.73 Ba .130 -.130 5/6 .02 1.73 Al1 -.230 .230 1/3 .83 .95 Fe3+1 -.230 .230 1/3 .04 .95 Fe2+1 -.230 .230 1/3 .04 .95 Mg1 -.230 .230 1/3 .08 .95 Ti1 -.230 .230 1/3 .01 .95 Al2 .100 -.100 1/3 .74 Si1 .796 .200 -.0894 .65 .19 Al1 .796 .200 -.0894 .35 .19 Si2 .462 .550 -.0895 .65 Oa .750 .178 -.0357 1.53 Ob .522 .566 -.0363 .40 OH .112 -.085 -.0337 .39 Oc .666 .857 -.1110 .74 Od .140 .451 -.1058 .80 Oe .563 .311 -.1098 .17