| Name: | TOMSQUARRYITE | ||
| Specification: | [1], 2R, "distorted" structure type - alunite, DF | ||
| Formula: | NaMgAl3[PO4]2(OH,F)6 · 8H2O | ||
| Symmetry Class: | trigonal | ||
| Space Group: | R 3(-)m | ||
| Unit Cell Parameters: | a = 6.9864 | c = 30.6340 | ||
| Number of Formula Unit: | Z = 6 | Unit Cell Volume, Å3: | Vc = 1294.92 |
| Number of Atomic Position per full Unit Cell: | P/U = 141 | Molar Volume, cm3/mol: | Vm = 130.00 |
| Number of Reflexes used in Structure Determination: | NR = 303 | X-ray density, g/cm3: | p = 2.15 |
| R-factor: | R = 0.0690 | MU, 1/cm: | µ = 55.380 |
| Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 25.743 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||