quartz T=298K: Kihara: E. J. Mineral. 2 (1990) 63-77
An X-ray study of the temperature dependence of the quartz structure
natural   T=298K
4.9137 4.9137 5.4047 90 90 120 *P1
0 0 .6666666666666667
U1
.611 .310 .254 3
O1
.511 .410 .254 2
anions
S
.511 .310 .254
END