| Name: | VARENNESITE | ||
| Specification: | [1] | ||
| Formula: | Na8(Mn,Fe,Ti)2Si10O25(OH,Cl)2 · 12H2O | ||
| Symmetry Class: | orthorhombic | ||
| Space Group: | C mcm | ||
| Unit Cell Parameters: | a = 13.4470 | b = 15.0220 | c = 17.6010 | ||
| Number of Formula Unit: | Z = 4 | Unit Cell Volume, Å3: | Vc = 3555.42 |
| Number of Atomic Position per full Unit Cell: | P/U = 236 | Molar Volume, cm3/mol: | Vm = 535.39 |
| Number of Reflexes used in Structure Determination: | NR = 2093 | X-ray density, g/cm3: | p = 2.31 |
| R-factor: | R = 0.0790 | MU, 1/cm: | µ = 117.839 |
| Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 51.004 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||