| Name: | ECKERMANNITE | ||
| Specification: | [3], F-analogue, DN | ||
| Formula: | Na(Na,Mg)2Mg4.88Al1.12Si8O22F2 | ||
| Symmetry Class: | monoclinic-beta | ||
| Space Group: | C 2/m | ||
| Unit Cell Parameters: | a = 9.6680 | b = 17.9160 | c = 5.2710 | beta = 102.8200 | ||
| Number of Formula Unit: | Z = 2 | Unit Cell Volume, Å3: | Vc = 890.24 |
| Number of Atomic Position per full Unit Cell: | P/U = 82 | Molar Volume, cm3/mol: | Vm = 268.11 |
| Number of Reflexes used in Structure Determination: | - | X-ray density, g/cm3: | p = 2.98 |
| R-factor: | - | MU, 1/cm: | µ = 93.635 |
| Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 31.395 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||