| Name: | AENIGMATITE | ||
| Specification: | [3], structure type - aenigmatite, syn, at 13 Gpa | ||
| Formula: | Na2Mg4Fe2Si6O20 | ||
| Symmetry Class: | triclinic | ||
| Space Group: | P 1(-) | ||
| Unit Cell Parameters: | a = 10.3280 | b = 10.7240 | c = 8.8050 | alpha = 105.1500 | beta = 96.8500 | gamma = 125.4700 | ||
| Number of Formula Unit: | Z = 2 | Unit Cell Volume, Å3: | Vc = 719.67 |
| Number of Atomic Position per full Unit Cell: | P/U = 68 | Molar Volume, cm3/mol: | Vm = 216.74 |
| Number of Reflexes used in Structure Determination: | - | X-ray density, g/cm3: | p = 3.33 |
| R-factor: | - | MU, 1/cm: | µ = 159.739 |
| Wave Length for Calculated Powder Diffraction Patterns: | Co=1.78892 | Mass attenuation coefficient, cm2/g: | µ/p = 47.911 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||