Cechite Pertlik F Neues Jahrbuch fur Mineralogie, Monatshefte 1989 (1989) 34-40 The crystal structure of cechite, Pb(Fe,Mn)(VO4)(OH) with Fe>Mn. A mineral of the descloizite group Locality: Vrancice, Bohemian pluton, Pribram, Czechoslovakia (Czech Republic) _database_code_amcsd 0014834 CELL PARAMETERS: 7.6050 9.4350 6.0990 90.000 90.000 90.000 SPACE GROUP: Pnam X-RAY WAVELENGTH: 1.541838 Cell Volume: 437.623 Density (g/cm3): 5.976 MAX. ABS. INTENSITY / VOLUME**2: 83.27680880 RIR: 4.537 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 17.31 67.55 5.1220 0 1 1 4 18.81 18.58 4.7175 0 2 0 2 20.91 39.95 4.2483 1 1 1 8 22.17 20.31 4.0088 1 2 0 4 23.39 1.62 3.8025 2 0 0 2 25.25 26.02 3.5268 2 1 0 4 26.61 18.48 3.3500 1 2 1 8 27.65 100.00 3.2267 2 0 1 4 29.29 30.55 3.0495 0 0 2 2 30.19 5.98 2.9605 2 2 0 4 30.76 53.80 2.9063 1 3 0 4 33.04 38.22 2.7111 1 1 2 8 33.65 45.72 2.6633 2 2 1 8 34.18 58.30 2.6236 1 3 1 8 35.04 20.59 2.5610 0 2 2 4 36.71 7.54 2.4482 3 1 0 4 37.04 5.78 2.4271 1 2 2 8 37.10 1.70 2.4235 2 3 0 4 37.82 4.50 2.3790 2 0 2 4 39.05 38.85 2.3068 2 1 2 8 39.67 2.83 2.2720 3 1 1 8 40.02 11.99 2.2529 1 4 0 4 40.39 6.22 2.2330 3 2 0 4 42.56 2.17 2.1242 2 2 2 8 42.79 12.07 2.1133 1 4 1 8 42.99 14.77 2.1039 1 3 2 8 43.14 11.01 2.0969 3 2 1 8 45.24 1.36 2.0044 2 4 0 4 45.65 6.59 1.9874 0 1 3 4 45.98 5.76 1.9737 3 3 0 4 47.27 4.37 1.9228 1 1 3 8 47.76 2.06 1.9042 2 4 1 8 47.84 8.15 1.9013 4 0 0 2 48.48 14.14 1.8778 3 3 1 8 48.81 6.52 1.8658 0 4 2 4 50.32 3.09 1.8132 1 2 3 8 50.36 6.31 1.8120 1 4 2 8 50.64 5.02 1.8027 0 5 1 4 50.67 3.78 1.8016 3 2 2 8 50.93 15.37 1.7928 2 0 3 4 51.25 10.26 1.7824 4 1 1 8 51.85 12.82 1.7634 4 2 0 4 52.14 9.03 1.7541 1 5 1 8 53.03 2.43 1.7268 3 4 0 4 54.27 2.91 1.6903 2 5 0 4 54.77 9.02 1.6759 2 2 3 8 54.81 1.22 1.6750 2 4 2 8 55.13 13.57 1.6659 1 3 3 8 55.29 4.29 1.6615 3 4 1 8 55.46 28.21 1.6569 3 3 2 8 57.09 14.22 1.6134 4 0 2 4 58.71 4.89 1.5725 0 6 0 2 58.81 12.57 1.5701 1 5 2 8 60.66 1.39 1.5266 4 2 2 8 60.74 9.82 1.5247 0 0 4 2 61.23 6.11 1.5137 3 5 0 4 61.43 3.27 1.5093 1 4 3 8 61.70 3.16 1.5033 3 2 3 8 61.73 1.38 1.5026 3 4 2 8 61.78 1.93 1.5016 5 1 0 4 62.77 1.40 1.4803 4 4 0 4 62.86 3.04 1.4784 2 5 2 8 63.30 3.89 1.4691 3 5 1 8 63.84 2.12 1.4581 5 1 1 8 64.19 1.10 1.4509 0 2 4 4 64.35 1.00 1.4476 5 2 0 4 65.50 1.82 1.4251 1 2 4 8 65.97 5.12 1.4161 3 3 3 8 66.10 11.02 1.4136 2 6 1 8 66.37 1.19 1.4085 5 2 1 8 66.85 3.28 1.3996 2 1 4 8 66.95 1.81 1.3976 0 6 2 4 67.75 1.80 1.3830 0 5 3 4 68.27 4.22 1.3738 4 1 3 8 69.02 3.61 1.3607 1 5 3 8 69.30 3.07 1.3558 3 5 2 8 69.63 7.93 1.3502 1 3 4 8 70.48 7.16 1.3360 5 3 1 8 71.71 1.68 1.3161 3 4 3 8 71.71 2.28 1.3161 0 7 1 4 72.22 2.35 1.3082 4 5 1 8 73.12 1.81 1.2943 3 1 4 8 74.18 1.73 1.2783 5 4 0 4 74.72 1.54 1.2704 2 7 0 4 75.25 2.57 1.2627 1 4 4 8 75.50 1.39 1.2592 3 2 4 8 76.08 1.25 1.2511 5 4 1 8 76.22 5.11 1.2491 5 3 2 8 76.81 4.58 1.2410 6 0 1 4 78.84 1.90 1.2141 3 5 3 8 79.02 1.59 1.2117 4 6 0 4 79.32 1.01 1.2079 5 1 3 8 79.42 1.95 1.2066 3 3 4 8 79.93 2.04 1.2002 6 2 1 8 80.80 2.57 1.1895 4 0 4 4 81.40 5.38 1.1822 2 6 3 8 81.68 1.68 1.1789 5 4 2 8 82.20 2.77 1.1727 2 7 2 8 83.08 2.21 1.1625 5 5 1 8 83.17 2.29 1.1615 6 1 2 8 83.17 3.21 1.1615 2 0 5 4 83.89 4.54 1.1534 4 2 4 8 85.50 3.92 1.1357 5 3 3 8 85.83 1.33 1.1322 2 5 4 8 86.24 2.21 1.1278 2 2 5 8 86.41 6.42 1.1261 4 6 2 8 86.54 2.72 1.1248 1 3 5 8 86.67 1.28 1.1234 0 7 3 4 87.15 1.30 1.1184 4 5 3 8 88.21 3.62 1.1077 2 8 1 8 88.99 2.97 1.1000 0 8 2 4 89.54 2.50 1.0947 0 6 4 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.