| Name: | BERYL | ||
| Specification: | [20], structure type - beryl, syn, DN | ||
| Formula: | (Be,Al,Si)3(Al,Mg,Fe)2Si6O18Cs0.07 | ||
| Symmetry Class: | hexagonal | ||
| Space Group: | P 6/mcc | ||
| Unit Cell Parameters: | a = 9.2359 | c = 9.2040 | ||
| Number of Formula Unit: | Z = 2 | Unit Cell Volume, Å3: | Vc = 679.93 |
| Number of Atomic Position per full Unit Cell: | P/U = 60 | Molar Volume, cm3/mol: | Vm = 204.77 |
| Number of Reflexes used in Structure Determination: | NR = 299 | X-ray density, g/cm3: | p = 2.69 |
| R-factor: | R = 0.0050 | MU, 1/cm: | µ = 94.901 |
| Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 35.299 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||