| Name: | PARGASITE | ||
| Specification: | [14], syn | ||
| Formula: | NaCa2[Mg4Al][Si6Al2]O22(OH)2 | ||
| Symmetry Class: | monoclinic-beta | ||
| Space Group: | C 2/m | ||
| Unit Cell Parameters: | a = 9.8930 | b = 17.9370 | c = 5.2802 | beta = 105.5180 | ||
| Number of Formula Unit: | Z = 2 | Unit Cell Volume, Å3: | Vc = 902.82 |
| Number of Atomic Position per full Unit Cell: | P/U = 84 | Molar Volume, cm3/mol: | Vm = 271.90 |
| Number of Reflexes used in Structure Determination: | - | X-ray density, g/cm3: | p = 3.08 |
| R-factor: | R = 0.0190 | MU, 1/cm: | µ = 132.252 |
| Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 42.980 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||