Muscovite Guggenheim S, Chang Y H, Koster van Groos A F American Mineralogist 72 (1987) 537-550 Muscovite dehydroxylation: High-temperature studies Sample: T = 300 deg C, from Diamond mine, Keystone, South Dakota _database_code_amcsd 0001077 5.215 9.053 20.15 90 95.72 90 C2/c atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) K 0 .0982 .25 .93 .024 .0090 .0017 0 .0009 0 Na 0 .0982 .25 .07 .024 .0090 .0017 0 .0009 0 Al .2511 .0835 .0000 .915 .0072 .0029 .0007 -.0008 .0005 .0002 Fe .2511 .0835 .0000 .08 .0072 .0029 .0007 -.0008 .0005 .0002 AlT1 .4645 .9297 .1351 .225 .0058 .0025 .0007 .0000 .0005 .0000 SiT1 .4645 .9297 .1351 .775 .0058 .0025 .0007 .0000 .0005 .0000 AlT2 .4514 .2584 .1354 .225 .0059 .0025 .0007 .0000 .0004 .0000 SiT2 .4514 .2584 .1354 .775 .0059 .0025 .0007 .0000 .0004 .0000 O1 .423 .0939 .1684 .016 .0045 .0008 -.001 .0001 .0003 O2 .247 .8127 .1570 .013 .0064 .0014 -.003 -.0002 .0007 O3 .248 .3675 .1682 .015 .0049 .0014 .003 .0007 .0000 O4 .461 .9439 .0540 .009 .0042 .0008 .000 .0011 .0004 O5 .384 .2517 .0530 .010 .0045 .0006 .001 .0003 .0005 OH .455 .5624 .0505 .915 .010 .0042 .0011 .000 .0010 -.0003 F .455 .5624 .0505 .085 .010 .0042 .0011 .000 .0010 -.0003