Name: | MARIANOITE | ||
Specification: | [1], structure type - wohlerite | ||
Formula: | Na2Ca4(Nb,Zr)2[Si2O7]2(O,F)4 | ||
Symmetry Class: | monoclinic-beta | ||
Space Group: | P 2(1) | ||
Unit Cell Parameters: | a = 10.8459 | b = 10.2260 | c = 7.2727 | beta = 109.3000 | ||
Number of Formula Unit: | Z = 2 | Unit Cell Volume, Å3: | Vc = 761.14 |
Number of Atomic Position per full Unit Cell: | P/U = 60 | Molar Volume, cm3/mol: | Vm = 229.23 |
Number of Reflexes used in Structure Determination: | - | X-ray density, g/cm3: | p = 3.45 |
R-factor: | R = 0.0465 | MU, 1/cm: | µ = 284.065 |
Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 82.287 |
Theta-Interval for CPDP: | T/I = 1-45 |