Hewettite Evans H T The Canadian Mineralogist 27 (1989) 181-188 The crystal structure of hewettite Note: sample Weeks number W-220-54 Locality: Colorado Plateau, USA _database_code_amcsd 0005224 12.290 3.590 11.174 90 97.24 90 P2_1/m atom x y z occ Uiso V1 .554 .25 -.088 .029 V2 .055 .25 .120 .040 V3 .796 .25 .036 .026 O1 .446 .25 .019 .070 O2 .940 .25 -.058 .030 O3 .688 .25 -.118 .000 O4 .123 .25 .236 .070 O5 .500 .25 -.211 .050 O6 .936 .25 .170 .070 O7 .703 .25 .120 .010 O8 .170 .25 .020 .020 Ca .228 .25 .470 .5 .070 O9 .681 .25 .657 .080 O10 .147 .25 .646 .150 O11 .674 .25 .368 .080 O12 .071 .25 .409 .5 .080