Spurrite
Smith J V, Karle I L, Hauptman H, Karle J
Acta Crystallographica 13 (1960) 454-458
The crystal structure of spurrite, Ca5(SiO4)2CO3.
II. Description of structure
Locality: contact zone at Scawt Hill, North Ireland
_database_code_amcsd 0009239
10.49 6.705 14.16 90 101.317 90 P2_1/a
atom    x    y    z
Ca1  .140 .661 .072
Ca2  .033 .240 .612
Ca3  .239 .061 .455
Ca4  .044 .990 .830
Ca5  .133 .507 .826
Si1  .135 .221 .056
Si2  .025 .750 .604
C    .185 .695 .285
O1   .124 .237 .938
O2   .141 .995 .098
O3   .008 .334 .083
O4   .263 .333 .106
O5   .883 .153 .468
O6   .890 .427 .335
O7   .024 .072 .330
O8   .098 .340 .468
O9   .283 .696 .235
O10  .073 .685 .230
O11  .211 .712 .372