Crystallography Open Database
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Result: there are 386 entries in the selection
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Searching space group like 'P -4 21 m'
COD ID  |
Links | Formula  |
Space group |
Cell parameters | Cell volume |
Bibliography |
|---|---|---|---|---|---|---|
| 9014854 | CIF | Al0.66 Ca1.96 Fe0.12 Mg0.24 Na0.04 O7 Si1.3 | P -4 21 m | 7.738; 7.738; 5.045 90; 90; 90 | 302.078 | Mokeeva, V.; Makarov, E. Isomorph in melilites: refining of crystal structure of akermanite and intermediate melilite Geokhimiya, 1979, 10, 1541-1544 |
| 9015368 | CIF | Al0.41 Ca1.5 Fe0.16 Mg0.39 Na0.5 O7 Si2 | P -4 21 m | 7.76; 7.76; 5.029 90; 90; 90 | 302.834 | Mokeeva, V.; Makarov, E. Isomorph in melilites: refining of crystal structure of akermanite and intermediate melilite Geokhimiya, 1979, 10, 1541-1544 |
| 9017316 | CIF | C H4 N2 O | P -4 21 m | 5.584; 5.584; 4.689 90; 90; 90 | 146.208 | Swaminathan, S.; Craven, B. M. The crystal structure and molecular thermal motion of urea at 12, 60 and 123 K from neutron diffraction Note: neutron data, T = 123 K Acta Crystallographica, Section B, 1984, 40, 300-306 |
| 9017317 | CIF | C H4 N2 O | P -4 21 m | 5.57; 5.57; 4.688 90; 90; 90 | 145.445 | Swaminathan, S.; Craven, B. M. The crystal structure and molecular thermal motion of urea at 12, 60 and 123 K from neutron diffraction Note: neutron data, T = 60 K Acta Crystallographica, Section B, 1984, 40, 300-306 |
| 9017318 | CIF | C H4 N2 O | P -4 21 m | 5.565; 5.565; 4.684 90; 90; 90 | 145.06 | Swaminathan, S.; Craven, B. M. The crystal structure and molecular thermal motion of urea at 12, 60 and 123 K from neutron diffraction Note: neutron data, T = 12 K Acta Crystallographica, Section B, 1984, 40, 300-306 |
| 9017542 | CIF | Al0.5 Ca1.52 Fe0.3 Mg0.2 Na0.48 O7 Si2 | P -4 21 m | 7.7661; 7.7661; 5.0297 90; 90; 90 | 303.353 | Wiedenmann, D.; Zaitsev, A. N.; Britvin, S. N.; Krivovichev, S. V.; Keller, J. Alumoakermanite, (Ca,Na)2(Al,Mg,Fe2+)(Si2O7), a new mineral from the active carbonatite-nephelinite-phonolite volcano Oldoinyo Lengai, northern Tanzania Mineralogical Magazine, 2009, 73, 373-384 |
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