Feldspar Benna P, Tribaudino M, Bruno E American Mineralogist 84 (1999) 120-129 High-temperature in situ structural investigation on lead feldspar Sample at T = 700 C, single Pb atom model _database_code_amcsd 0002068 8.448 13.057 7.166 90 115.25 90 C2/m atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Pb .2760 -.0041 .1404 .038 .130 .076 -.011 .016 -.011 Si1 .0051 .1798 .2253 .71 .029 .032 .031 -.005 .012 .001 Al1 .0051 .1798 .2253 .29 .029 .032 .031 -.005 .012 .001 Si2 .6948 .1174 .3453 .71 .019 .024 .030 -.001 .007 -.001 Al2 .6948 .1174 .3453 .29 .019 .024 .030 -.001 .007 -.001 OA(1) 0 .1351 0 .049 .055 .029 0 .022 0 OA(2) .6057 0 .2918 .030 .024 .066 0 .013 0 OB .8203 .1334 .2243 .041 .063 .064 -.015 .025 -.001 OC .0215 .3072 .2543 .041 .039 .066 -.011 .021 -.003 OD .1899 .1248 .3983 .043 .060 .038 .006 .009 .002