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 = 1.5, p = 1.26, Synthesis at P=200 MPa, T=500 C _database_code_amcsd 0003593 CELL PARAMETERS: 8.8589 5.7017 10.1802 90.000 115.540 90.000 SPACE GROUP: P2_1/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 463.964 Density (g/cm3): 3.497 MAX. ABS. INTENSITY / VOLUME**2: 9.518274879 RIR: 0.886 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.63 5.72 9.1854 0 0 1 2 11.07 2.17 7.9932 1 0 0 2 11.11 6.72 7.9658 -1 0 1 2 17.57 1.15 5.0477 1 0 1 2 17.64 28.02 5.0270 -1 0 2 2 19.12 1.70 4.6418 1 1 0 4 19.14 5.27 4.6364 -1 1 1 4 22.24 12.21 3.9966 2 0 0 2 22.32 21.11 3.9829 -2 0 2 2 23.54 4.44 3.7794 1 1 1 4 23.59 2.64 3.7707 -1 1 2 4 25.46 31.22 3.4979 -2 1 1 4 26.22 13.28 3.3991 1 0 2 2 27.25 1.27 3.2727 2 1 0 4 27.31 1.01 3.2652 -2 1 2 4 27.92 7.62 3.1953 2 0 1 2 29.17 4.71 3.0618 0 0 3 2 30.62 3.51 2.9197 1 1 2 4 30.64 3.06 2.9175 -3 0 1 2 30.69 11.56 2.9135 -3 0 2 2 30.69 100.00 2.9130 -1 1 3 4 31.38 37.60 2.8509 0 2 0 2 32.11 6.58 2.7874 2 1 1 4 32.22 2.56 2.7781 -2 1 3 4 33.21 29.66 2.6975 0 1 3 4 33.37 25.10 2.6852 1 2 0 4 33.64 17.54 2.6644 3 0 0 2 34.53 44.51 2.5972 -3 1 1 4 34.57 1.16 2.5944 -3 1 2 4 35.57 18.20 2.5238 2 0 2 2 35.73 1.85 2.5133 -1 0 4 2 36.19 1.65 2.4823 1 2 1 4 36.22 9.05 2.4798 -1 2 2 4 37.12 27.42 2.4222 0 2 2 4 37.36 31.71 2.4071 -3 1 3 4 37.52 3.25 2.3972 -2 2 1 4 38.80 1.07 2.3209 2 2 0 4 38.85 12.10 2.3182 -2 2 2 4 39.03 2.70 2.3079 2 1 2 4 39.09 6.48 2.3044 1 1 3 4 39.17 5.32 2.2999 -2 1 4 4 39.17 1.35 2.2998 -1 1 4 4 39.22 2.73 2.2968 -3 0 4 2 41.39 6.83 2.1815 -1 2 3 4 41.92 18.50 2.1552 -4 0 1 2 42.01 1.76 2.1509 -4 0 3 2 42.43 1.22 2.1304 -3 1 4 4 42.44 1.06 2.1301 0 1 4 4 42.50 16.13 2.1272 2 2 1 4 42.58 17.55 2.1231 -2 2 3 4 43.37 14.80 2.0865 0 2 3 4 44.35 7.06 2.0423 2 0 3 2 44.43 2.30 2.0390 -3 2 1 4 45.38 4.86 1.9983 4 0 0 2 47.28 5.04 1.9227 2 1 3 4 48.15 8.51 1.8897 2 2 2 4 48.27 9.72 1.8854 -2 2 4 4 48.27 7.40 1.8853 -1 2 4 4 48.43 3.92 1.8797 1 1 4 4 48.51 3.97 1.8765 -1 1 5 4 49.01 1.88 1.8586 3 1 2 4 49.28 1.85 1.8490 1 3 0 4 49.62 1.04 1.8371 0 0 5 2 50.92 1.35 1.7932 3 2 1 4 51.07 2.32 1.7883 0 2 4 4 51.82 5.32 1.7643 -5 0 2 2 52.31 2.06 1.7490 -4 2 2 4 52.32 2.19 1.7486 0 1 5 4 52.39 3.80 1.7466 -2 3 1 4 53.65 4.21 1.7085 -4 1 5 4 54.13 2.82 1.6943 -2 0 6 2 54.44 1.00 1.6855 -5 1 2 4 54.48 1.82 1.6842 -5 1 3 4 54.78 2.41 1.6757 -3 0 6 2 55.43 9.67 1.6576 -1 3 3 4 55.99 1.07 1.6425 1 0 5 2 56.08 11.01 1.6399 -1 0 6 2 56.21 3.23 1.6363 4 2 0 4 56.32 1.08 1.6335 2 3 1 4 56.35 9.00 1.6326 -5 1 1 4 56.36 19.22 1.6326 -4 2 4 4 56.37 6.28 1.6323 1 2 4 4 56.49 1.35 1.6291 -5 1 4 4 56.50 2.32 1.6288 2 1 4 4 56.68 1.49 1.6241 -2 1 6 4 56.89 6.29 1.6184 3 2 2 4 57.03 4.33 1.6148 0 3 3 4 57.91 10.62 1.5925 -3 3 1 4 57.98 12.07 1.5906 -4 0 6 2 58.48 4.43 1.5783 1 1 5 4 59.84 4.57 1.5455 -3 3 3 4 60.11 1.90 1.5393 5 1 0 4 60.15 6.61 1.5384 4 1 2 4 60.47 1.41 1.5309 0 0 6 2 61.11 1.31 1.5164 -4 2 5 4 63.48 1.02 1.4655 -5 0 6 2 63.62 1.27 1.4626 -5 2 1 4 63.74 9.45 1.4601 -5 2 4 4 63.75 4.12 1.4598 2 2 4 4 63.90 4.38 1.4568 -6 0 4 2 63.92 3.82 1.4565 -2 2 6 4 63.92 2.30 1.4564 3 0 4 2 64.51 6.63 1.4446 -3 2 6 4 65.48 20.84 1.4254 0 4 0 2 65.51 1.14 1.4248 5 1 1 4 66.49 1.26 1.4061 -3 1 7 4 66.60 4.12 1.4043 2 1 5 4 67.13 3.15 1.3944 5 2 0 4 67.17 13.05 1.3937 4 2 2 4 67.30 1.15 1.3913 2 3 3 4 67.42 1.04 1.3890 -4 2 6 4 68.22 1.42 1.3748 1 3 4 4 68.51 1.31 1.3696 -4 1 7 4 68.69 1.09 1.3664 -6 1 1 4 69.72 3.56 1.3487 0 2 6 4 70.12 1.02 1.3421 -2 4 2 4 70.19 1.76 1.3409 5 0 2 2 72.53 1.14 1.3033 -5 2 6 4 72.53 1.54 1.3033 -4 3 5 4 72.83 4.02 1.2986 -6 2 2 4 72.92 4.49 1.2972 -6 2 4 4 74.04 1.36 1.2804 -3 4 2 4 74.15 1.73 1.2788 0 1 7 4 74.28 1.53 1.2769 3 0 5 2 74.58 2.91 1.2725 -3 0 8 2 74.82 3.24 1.2689 4 2 3 4 74.84 4.78 1.2687 -5 3 1 4 75.30 1.46 1.2620 -6 2 1 4 75.31 1.40 1.2619 4 0 4 2 75.49 2.09 1.2594 -6 2 5 4 75.67 2.53 1.2569 3 4 0 4 75.68 1.03 1.2567 -2 0 8 2 76.68 2.02 1.2427 1 3 5 4 76.80 3.74 1.2412 2 4 2 4 78.16 2.21 1.2229 4 3 2 4 79.06 2.84 1.2112 -6 1 7 4 79.07 1.12 1.2111 -3 4 4 4 79.67 1.20 1.2035 -6 2 6 4 80.85 2.04 1.1889 -4 4 1 4 83.99 2.03 1.1522 2 3 5 4 84.34 1.34 1.1484 -6 0 8 2 86.46 1.27 1.1256 0 1 8 4 87.03 1.13 1.1197 7 1 0 4 87.39 2.21 1.1160 -7 1 7 4 87.40 1.63 1.1159 -5 2 8 4 87.41 1.63 1.1157 -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.