| Name: | PRINCIVALLEITE | ||
| Specification: | [1] | ||
| Formula: | Na[Mn2Al]Al6[Si6O18][BO3]3(OH)3O | ||
| Symmetry Class: | trigonal | ||
| Space Group: | R 3m | ||
| Unit Cell Parameters: | a = 15.9155 | c = 7.1166 | ||
| Number of Formula Unit: | Z = 4 | Unit Cell Volume, Å3: | Vc = 1561.15 |
| Number of Atomic Position per full Unit Cell: | P/U = 159 | Molar Volume, cm3/mol: | Vm = 235.08 |
| Number of Reflexes used in Structure Determination: | NR = 1744 | X-ray density, g/cm3: | p = 3.16 |
| R-factor: | R = 0.0134 | MU, 1/cm: | µ = 132.880 |
| Wave Length for Calculated Powder Diffraction Patterns: | Co=1.78892 | Mass attenuation coefficient, cm2/g: | µ/p = 41.997 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||