Gaudefroyite Antao S M, Hassan I The Canadian Mineralogist 46 (2008) 183-193 Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure Locality: Wessels mine, Kalahari manganese field, South Africa Sample: T = 145 C _database_code_amcsd 0006171 CELL PARAMETERS: 10.6186 10.6186 5.8953 90.000 90.000 120.000 SPACE GROUP: P6_3/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 575.669 Density (g/cm3): 3.516 MAX. ABS. INTENSITY / VOLUME**2: 16.60932201 RIR: 1.538 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.62 42.41 9.1960 1 0 0 6 16.70 8.68 5.3093 1 1 0 6 17.87 16.38 4.9630 1 0 1 12 19.30 71.90 4.5980 2 0 0 6 22.54 2.82 3.9452 1 1 1 12 24.55 5.23 3.6256 2 0 1 12 25.63 2.48 3.4758 1 2 0 6 29.13 11.27 3.0653 3 0 0 6 29.84 33.63 2.9941 1 2 1 12 29.84 7.48 2.9941 2 1 1 12 31.88 3.32 2.8070 1 0 2 12 32.93 18.76 2.7197 3 0 1 12 33.76 63.87 2.6547 2 2 0 6 35.19 3.98 2.5505 3 1 0 6 35.19 6.17 2.5505 1 3 0 6 36.20 100.00 2.4815 2 0 2 12 37.14 3.53 2.4206 2 2 1 12 38.46 11.52 2.3408 1 3 1 12 38.46 3.89 2.3408 3 1 1 12 39.18 4.77 2.2990 4 0 0 6 40.11 4.63 2.2481 2 1 2 12 40.11 10.18 2.2481 1 2 2 12 42.19 7.39 2.1419 4 0 1 12 42.55 6.95 2.1247 3 0 2 12 42.87 5.13 2.1097 2 3 0 6 42.87 4.92 2.1097 3 2 0 6 45.67 3.42 1.9863 2 3 1 12 47.12 11.66 1.9287 3 1 2 12 47.30 5.34 1.9217 1 0 3 12 47.88 5.77 1.8997 1 4 1 12 47.88 1.25 1.8997 4 1 1 12 49.46 1.36 1.8429 1 1 3 12 49.56 8.49 1.8392 5 0 0 6 50.33 40.69 1.8128 4 0 2 12 50.51 2.08 1.8070 2 0 3 12 52.09 7.38 1.7557 5 0 1 12 52.67 1.26 1.7379 2 4 0 6 52.67 6.85 1.7379 4 2 0 6 53.41 2.30 1.7156 2 3 2 12 53.41 8.39 1.7156 3 2 2 12 53.57 2.90 1.7106 1 2 3 12 53.57 1.58 1.7106 2 1 3 12 55.09 1.93 1.6670 4 2 1 12 55.39 1.44 1.6588 1 4 2 12 55.39 3.98 1.6588 4 1 2 12 55.55 3.08 1.6543 3 0 3 12 55.65 1.92 1.6517 1 5 0 6 55.65 4.38 1.6517 5 1 0 6 57.99 5.09 1.5904 5 1 1 12 60.40 13.52 1.5327 6 0 0 6 61.07 2.92 1.5173 3 3 2 12 61.32 1.11 1.5118 3 4 0 6 61.32 1.99 1.5118 4 3 0 6 61.99 14.77 1.4971 2 4 2 12 61.99 19.15 1.4971 4 2 2 12 63.08 9.10 1.4738 0 0 4 2 63.14 1.18 1.4725 5 2 0 6 63.53 1.84 1.4644 3 4 1 12 63.98 1.50 1.4552 1 0 4 12 64.69 2.13 1.4409 1 5 2 12 64.84 1.15 1.4379 2 3 3 12 65.76 1.21 1.4201 1 1 4 12 66.64 2.43 1.4035 2 0 4 12 69.07 3.96 1.3598 6 0 2 12 70.07 2.30 1.3428 5 0 3 12 71.01 7.17 1.3273 4 4 0 6 71.86 1.00 1.3137 3 5 0 6 73.49 12.14 1.2886 2 2 4 12 74.33 1.09 1.2761 1 3 4 12 74.39 1.82 1.2753 6 2 0 6 74.39 1.78 1.2753 2 6 0 6 75.00 4.02 1.2664 1 6 2 12 75.14 1.25 1.2644 1 5 3 12 75.14 2.81 1.2644 5 1 3 12 76.83 1.60 1.2408 4 0 4 12 80.09 1.27 1.1982 3 4 3 12 82.40 2.91 1.1704 2 6 2 12 82.40 5.75 1.1704 6 2 2 12 84.18 1.53 1.1501 5 0 4 12 86.44 1.63 1.1257 1 7 2 12 86.60 1.85 1.1240 4 2 4 12 87.33 1.13 1.1166 1 2 5 12 89.02 1.46 1.0997 5 1 4 12 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.