Piemontite Nagashima M, Akasaka M American Mineralogist 89 (2004) 1119-1129 An X-ray Rietveld study of piemontite on the join Ca2Al3Si3O12(OH) - Ca2Mn3+3Si3O12(OH) formed by hydrothermal synthesis Sample: q = 1.75, p = 1.26, Synthesis at P=200 MPa, T=500 C _database_code_amcsd 0003595 CELL PARAMETERS: 8.8591 5.7039 10.1827 90.000 115.548 90.000 SPACE GROUP: P2_1/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 464.236 Density (g/cm3): 3.493 MAX. ABS. INTENSITY / VOLUME**2: 10.81896730 RIR: 1.009 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.63 4.88 9.1871 0 0 1 2 11.07 2.58 7.9929 1 0 0 2 11.11 7.14 7.9670 -1 0 1 2 17.64 24.58 5.0282 -1 0 2 2 19.12 1.51 4.6429 1 1 0 4 19.14 4.71 4.6378 -1 1 1 4 22.24 12.01 3.9964 2 0 0 2 22.32 20.65 3.9835 -2 0 2 2 23.54 3.29 3.7801 1 1 1 4 23.59 2.85 3.7719 -1 1 2 4 25.46 27.99 3.4985 -2 1 1 4 26.22 12.35 3.3994 1 0 2 2 27.92 7.21 3.1952 2 0 1 2 29.16 4.60 3.0624 0 0 3 2 30.62 3.75 2.9201 1 1 2 4 30.64 1.98 2.9175 -3 0 1 2 30.68 89.93 2.9138 -1 1 3 4 30.68 10.07 2.9137 -3 0 2 2 31.37 33.11 2.8519 0 2 0 2 32.11 6.01 2.7876 2 1 1 4 32.21 1.77 2.7788 -2 1 3 4 33.20 26.15 2.6981 0 1 3 4 33.36 21.64 2.6861 1 2 0 4 33.64 15.87 2.6643 3 0 0 2 34.53 34.52 2.5974 -3 1 1 4 34.57 1.93 2.5948 -3 1 2 4 35.57 15.92 2.5239 2 0 2 2 35.72 1.62 2.5139 -1 0 4 2 36.18 1.38 2.4830 1 2 1 4 36.21 7.99 2.4807 -1 2 2 4 37.11 24.30 2.4229 0 2 2 4 37.35 26.76 2.4075 -3 1 3 4 37.51 3.12 2.3979 -2 2 1 4 38.79 1.25 2.3215 2 2 0 4 38.83 9.78 2.3189 -2 2 2 4 39.03 1.82 2.3080 2 1 2 4 39.08 6.11 2.3047 1 1 3 4 39.16 5.20 2.3005 -2 1 4 4 39.16 1.55 2.3004 -1 1 4 4 39.22 2.51 2.2972 -3 0 4 2 41.38 6.29 2.1822 -1 2 3 4 41.92 16.40 2.1551 -4 0 1 2 42.00 1.52 2.1510 -4 0 3 2 42.43 1.40 2.1305 0 1 4 4 42.49 15.36 2.1277 2 2 1 4 42.57 14.53 2.1238 -2 2 3 4 43.35 12.45 2.0871 0 2 3 4 44.35 5.87 2.0424 2 0 3 2 44.42 1.41 2.0394 -3 2 1 4 45.39 4.12 1.9982 4 0 0 2 45.64 1.06 1.9876 -1 0 5 2 47.27 4.74 1.9229 2 1 3 4 48.14 7.34 1.8900 2 2 2 4 48.26 9.13 1.8859 -2 2 4 4 48.26 6.28 1.8858 -1 2 4 4 48.42 2.95 1.8800 1 1 4 4 48.50 3.67 1.8769 -1 1 5 4 49.01 1.41 1.8586 3 1 2 4 49.26 1.95 1.8497 1 3 0 4 50.92 1.44 1.7934 3 2 1 4 51.06 2.00 1.7888 0 2 4 4 51.82 4.32 1.7643 -5 0 2 2 52.30 1.86 1.7492 -4 2 2 4 52.31 1.60 1.7489 0 1 5 4 52.37 3.74 1.7472 -2 3 1 4 53.63 4.56 1.7088 -4 1 5 4 54.12 2.65 1.6947 -2 0 6 2 54.48 1.76 1.6843 -5 1 3 4 54.77 2.22 1.6761 -3 0 6 2 55.41 8.24 1.6582 -1 3 3 4 56.07 10.10 1.6402 -1 0 6 2 56.21 3.01 1.6365 4 2 0 4 56.34 15.41 1.6329 -4 2 4 4 56.35 6.58 1.6327 1 2 4 4 56.35 8.70 1.6326 -5 1 1 4 56.48 1.14 1.6293 -5 1 4 4 56.49 1.47 1.6289 2 1 4 4 56.89 5.23 1.6186 3 2 2 4 57.01 3.52 1.6153 0 3 3 4 57.89 8.78 1.5929 -3 3 1 4 57.97 10.13 1.5910 -4 0 6 2 58.47 4.28 1.5785 1 1 5 4 59.82 3.62 1.5459 -3 3 3 4 60.11 2.18 1.5393 5 1 0 4 60.15 5.82 1.5384 4 1 2 4 60.46 1.06 1.5312 0 0 6 2 61.10 1.54 1.5168 -4 2 5 4 63.47 1.03 1.4657 -5 0 6 2 63.61 1.16 1.4627 -5 2 1 4 63.73 7.87 1.4603 -5 2 4 4 63.74 3.40 1.4601 2 2 4 4 63.90 3.95 1.4569 -2 2 6 4 63.90 3.68 1.4569 -6 0 4 2 63.92 1.63 1.4565 3 0 4 2 64.49 5.36 1.4450 -3 2 6 4 65.45 18.10 1.4260 0 4 0 2 65.52 1.06 1.4247 5 1 1 4 66.47 1.01 1.4065 -3 1 7 4 66.59 3.77 1.4044 2 1 5 4 67.12 2.64 1.3945 5 2 0 4 67.16 11.67 1.3938 4 2 2 4 68.20 1.13 1.3751 1 3 4 4 68.49 1.10 1.3699 -4 1 7 4 68.69 1.02 1.3664 -6 1 1 4 69.70 3.08 1.3490 0 2 6 4 70.19 1.49 1.3409 5 0 2 2 72.50 1.61 1.3037 -4 3 5 4 72.83 3.26 1.2987 -6 2 2 4 72.91 3.49 1.2974 -6 2 4 4 74.01 1.20 1.2808 -3 4 2 4 74.13 1.84 1.2790 0 1 7 4 74.27 1.34 1.2770 3 0 5 2 74.55 2.67 1.2728 -3 0 8 2 74.82 2.68 1.2690 4 2 3 4 74.82 4.67 1.2689 -5 3 1 4 75.30 1.13 1.2621 -6 2 1 4 75.31 1.40 1.2619 4 0 4 2 75.47 2.52 1.2596 -6 2 5 4 75.64 2.22 1.2572 3 4 0 4 76.66 2.02 1.2430 1 3 5 4 76.77 3.37 1.2415 2 4 2 4 78.11 1.03 1.2236 5 3 0 4 78.14 1.93 1.2231 4 3 2 4 79.03 1.06 1.2115 -3 4 4 4 79.05 2.10 1.2114 -6 1 7 4 79.65 1.04 1.2038 -6 2 6 4 80.82 1.77 1.1892 -4 4 1 4 83.97 1.88 1.1525 2 3 5 4 84.31 1.24 1.1486 -6 0 8 2 87.03 1.09 1.1196 7 1 0 4 87.37 1.58 1.1162 -5 2 8 4 87.37 1.92 1.1161 -7 1 7 4 87.38 1.35 1.1160 -1 2 8 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.