| Name: | HELMUTWINKLERITE | ||
| Specification: | [1] | ||
| Formula: | PbZn2[AsO4]2[OH,H2O]2 | ||
| Symmetry Class: | triclinic | ||
| Space Group: | P 1(-) | ||
| Unit Cell Parameters: | a = 5.6060 | b = 5.6100 | c = 7.6170 | alpha = 70.1900 | beta = 69.9100 | gamma = 69.1800 | ||
| Number of Formula Unit: | Z = 1 | Unit Cell Volume, Å3: | Vc = 203.77 |
| Number of Atomic Position per full Unit Cell: | P/U = 15 | Molar Volume, cm3/mol: | Vm = 122.74 |
| Number of Reflexes used in Structure Determination: | NR = 662 | X-ray density, g/cm3: | p = 5.28 |
| R-factor: | R = 0.0290 | MU, 1/cm: | µ = 743.218 |
| Wave Length for Calculated Powder Diffraction Patterns: | Co=1.78892 | Mass attenuation coefficient, cm2/g: | µ/p = 140.836 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||