Cuspidine
Bellezza M, Merlino S, Perchiazzi N
European Journal of Mineralogy 16 (2004) 957-969
Chemical and structural study of the Zr,Ti-disilicates in the venanzite
from Pian di Celle, Umbria, Italy
Locality: Pian di Celle, Umbria, Italy
_database_code_amcsd 0007083
10.919 10.485 7.485 90 109.55 90 P2_1/a
atom     x     y     z occ Uiso
Ca1  .3125 .0879 .0290 .86 .016
Zr1  .3125 .0879 .0290 .14 .016
Ca2  .4198 .3682 .8399     .016
Ca3  .3061 .0950 .5307     .016
Ca4  .4235 .3684 .3310 .83 .015
Na4  .4235 .3684 .3310 .17 .015
Si1  .6309 .1893 .2260     .014
Si2  .6226 .1874 .6545     .013
O1   .6221 .2197 .4376     .038
O2   .7525 .2781 .2303     .021
O3   .7421 .2748 .7783     .024
O4   .6687 .0430 .2104     .028
O5   .6556 .0403 .7042     .033
O6   .4906 .2344 .0921     .023
O7   .4801 .2355 .6412     .021
F1   .6049 .4962 .9292     .019
F2   .3955 .4985 .5744     .020