| Name: | GYPSUM | ||
| Specification: | [2], structure type - gypsum, at 4.2oK | ||
| Formula: | CaSO4 · 2[HH]2O | ||
| Symmetry Class: | monoclinic-beta | ||
| Space Group: | *I 2/a | ||
| Unit Cell Parameters: | a = 5.6740 | b = 15.1049 | c = 6.4909 | beta = 118.5130 | ||
| Number of Formula Unit: | Z = 4 | Unit Cell Volume, Å3: | Vc = 488.83 |
| Number of Atomic Position per full Unit Cell: | P/U = 48 | Molar Volume, cm3/mol: | Vm = 73.61 |
| Number of Reflexes used in Structure Determination: | - | X-ray density, g/cm3: | p = 2.34 |
| R-factor: | R = 0.0150 | MU, 1/cm: | µ = 142.018 |
| Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 60.727 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||