| Name: | NEPTUNITE | ||
| Specification: | [5], structure type - neptunite, at 493oK | ||
| Formula: | KNa2Li(Fe,Mn,Mg)2Ti2Si8O24 | ||
| Symmetry Class: | monoclinic-beta | ||
| Space Group: | C c | ||
| Unit Cell Parameters: | a = 16.4260 | b = 12.5320 | c = 9.9950 | beta = 115.5100 | ||
| Number of Formula Unit: | Z = 4 | Unit Cell Volume, Å3: | Vc = 1856.89 |
| Number of Atomic Position per full Unit Cell: | P/U = 160 | Molar Volume, cm3/mol: | Vm = 279.62 |
| Number of Reflexes used in Structure Determination: | - | X-ray density, g/cm3: | p = 3.21 |
| R-factor: | - | MU, 1/cm: | µ = 261.744 |
| Wave Length for Calculated Powder Diffraction Patterns: | Co=1.78892 | Mass attenuation coefficient, cm2/g: | µ/p = 81.647 |
| Theta-Interval for CPDP: | T/I = 1-25 | ||