| Name: | HEIMAEYITE | ||
| Specification: | [5], structure type - heimaeyite, analogue | ||
| Formula: | K7Ta[SO4]6 | ||
| Symmetry Class: | trigonal | ||
| Space Group: | R 3(-) | ||
| Unit Cell Parameters: | a = 14.9690 | c = 9.2830 | ||
| Number of Formula Unit: | Z = 3 | Unit Cell Volume, Å3: | Vc = 1801.38 |
| Number of Atomic Position per full Unit Cell: | P/U = 114 | Molar Volume, cm3/mol: | Vm = 361.68 |
| Number of Reflexes used in Structure Determination: | NR = 1731 | X-ray density, g/cm3: | p = 2.85 |
| R-factor: | R = 0.0270 | MU, 1/cm: | µ = 375.950 |
| Wave Length for Calculated Powder Diffraction Patterns: | Co=1.78892 | Mass attenuation coefficient, cm2/g: | µ/p = 131.904 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||