Cassiterite
Wyckoff R W G
Crystal Structures 1 (1963) 239-444
Second edition. Interscience Publishers, New York, New York
Rutile structure
_database_code_amcsd 0011761
4.73727 4.73727 3.186383 90 90 90 P4_2/mnm
atom    x    y z
Sn      0    0 0
O    .307 .307 0