Braccoite Camara F, Bittarello E, Ciriotti M E, Nestola F, Radica F, Marchesini M Mineralogical Magazine 79 (2015) 171-189 As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: II. braccoite, NaMn5[Si5AsO17(OH)](OH), description and crystal structure Locality: Valletta mine, Maira Valley, Piedmont, Italy _database_code_amcsd 0020722 CELL PARAMETERS: 9.7354 9.9572 9.0657 92.691 117.057 105.323 SPACE GROUP: P-1 X-RAY WAVELENGTH: 1.541838 Cell Volume: 740.370 Density (g/cm3): 3.559 MAX. ABS. INTENSITY / VOLUME**2: 9.773224921 RIR: 0.894 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 10.77 1.00 8.2109 1 0 0 2 11.17 30.10 7.9191 0 0 1 2 11.81 39.65 7.4952 -1 1 0 2 13.73 2.92 6.4489 -1 1 1 2 16.44 3.81 5.3912 1 1 0 2 18.49 10.74 4.7975 1 -1 1 2 18.84 7.73 4.7098 0 2 0 2 18.97 5.21 4.6779 1 0 1 2 19.97 2.81 4.4459 0 -2 1 2 20.64 2.84 4.3035 -2 1 0 2 20.79 6.87 4.2729 -1 2 1 2 21.38 1.19 4.1553 -1 -1 2 2 21.65 2.18 4.1054 2 0 0 2 22.17 3.00 4.0102 -1 1 2 2 22.45 4.00 3.9596 0 0 2 2 23.04 2.26 3.8602 -1 -2 1 2 23.15 6.73 3.8420 -2 2 1 2 23.29 5.73 3.8197 -2 1 2 2 23.62 7.19 3.7665 1 1 1 2 23.74 6.08 3.7476 -2 2 0 2 23.79 12.06 3.7408 0 2 1 2 25.33 1.03 3.5163 -2 -1 2 2 26.05 1.31 3.4201 0 1 2 2 26.32 9.37 3.3863 2 1 0 2 26.44 3.00 3.3711 0 -2 2 2 26.68 9.03 3.3409 -1 -2 2 2 26.95 8.61 3.3085 -1 3 0 2 27.43 6.52 3.2519 2 -1 1 2 27.95 3.52 3.1923 -1 2 2 2 28.36 25.16 3.1468 1 -1 2 2 28.47 1.38 3.1354 0 -3 1 2 29.15 51.05 3.0635 2 -2 1 2 29.15 18.57 3.0633 1 -3 1 2 29.36 1.78 3.0424 -1 3 1 2 29.41 15.67 3.0365 1 0 2 2 29.68 26.93 3.0099 -3 2 1 2 29.76 5.16 3.0022 -2 3 0 2 30.00 28.90 2.9787 -2 3 1 2 30.08 1.67 2.9710 -2 -2 1 2 30.12 5.20 2.9671 -1 0 3 2 30.96 1.30 2.8885 -3 1 0 2 31.46 4.27 2.8439 -2 1 3 2 31.49 1.98 2.8409 -3 2 2 2 31.70 100.00 2.8222 -2 -1 3 2 32.12 4.47 2.7868 -3 2 0 2 32.66 1.28 2.7417 0 3 1 2 32.99 4.12 2.7152 -3 -1 1 2 33.24 69.60 2.6956 2 2 0 2 33.34 9.97 2.6874 1 1 2 2 33.66 2.11 2.6624 2 -3 1 2 33.67 11.89 2.6615 1 3 0 2 33.87 17.06 2.6469 -3 0 3 2 33.96 4.47 2.6397 0 0 3 2 34.31 30.92 2.6139 -2 3 2 2 34.39 3.32 2.6078 -3 3 1 2 35.18 1.64 2.5510 1 -3 2 2 35.95 1.42 2.4984 -3 3 0 2 36.15 1.88 2.4849 -1 4 0 2 37.03 1.76 2.4277 3 1 0 2 37.10 2.23 2.4236 -4 1 2 2 37.12 17.44 2.4223 0 1 3 2 37.49 2.66 2.3988 2 -2 2 2 37.67 2.03 2.3881 3 -1 1 2 37.67 6.79 2.3877 0 -4 1 2 37.84 19.20 2.3778 -4 1 1 2 38.22 2.94 2.3549 0 4 0 2 39.68 14.97 2.2713 2 2 1 2 40.56 12.75 2.2243 -2 -1 4 2 40.58 10.51 2.2230 0 -4 2 2 40.99 25.38 2.2019 -3 4 1 2 41.41 4.21 2.1807 -1 0 4 2 41.44 1.04 2.1792 2 3 0 2 41.57 4.32 2.1723 -2 3 3 2 41.77 1.65 2.1626 1 -4 2 2 41.81 5.46 2.1607 -3 4 0 2 43.42 4.98 2.0842 -3 4 2 2 43.42 14.81 2.0841 -1 -2 4 2 43.66 1.61 2.0732 1 -3 3 2 43.95 13.36 2.0602 3 1 1 2 45.60 1.51 1.9894 -4 1 4 2 45.83 2.12 1.9800 -1 5 0 2 46.28 1.80 1.9617 1 -5 1 2 46.55 1.23 1.9510 3 -1 2 2 46.72 3.35 1.9444 -1 -4 3 2 47.07 1.35 1.9305 -5 2 2 2 47.61 1.67 1.9099 -4 2 4 2 48.16 1.72 1.8895 1 4 1 2 48.20 2.55 1.8881 -1 2 4 2 48.51 1.24 1.8768 -5 2 3 2 48.81 3.23 1.8657 0 1 4 2 49.41 2.34 1.8444 0 -3 4 2 49.61 2.92 1.8377 1 2 3 2 49.64 1.02 1.8364 1 -5 2 2 51.03 2.56 1.7898 -5 0 1 2 51.10 1.81 1.7876 4 0 1 2 51.10 2.13 1.7873 -1 -5 1 2 51.22 1.84 1.7834 -5 3 3 2 51.39 2.48 1.7779 1 -2 4 2 51.55 6.32 1.7728 -5 1 4 2 52.04 2.24 1.7574 0 5 1 2 52.54 2.10 1.7417 1 0 4 2 52.78 1.14 1.7346 -1 -1 5 2 52.82 5.21 1.7332 -5 2 0 2 52.86 7.19 1.7319 3 1 2 2 53.26 1.79 1.7198 1 5 0 2 53.33 1.33 1.7178 -1 0 5 2 53.45 2.54 1.7141 -1 -4 4 2 54.13 5.13 1.6942 -1 -2 5 2 54.22 1.37 1.6917 -1 3 4 2 54.24 2.06 1.6912 -4 5 2 2 54.52 15.27 1.6830 -4 5 0 2 54.76 24.49 1.6762 -4 -3 3 2 55.11 1.34 1.6665 -3 -4 3 2 55.32 1.53 1.6606 4 1 1 2 55.41 1.99 1.6581 1 4 2 2 55.52 5.54 1.6550 1 -5 3 2 55.69 4.98 1.6505 -5 3 4 2 55.80 14.93 1.6475 -4 2 5 2 56.15 1.80 1.6380 2 4 1 2 57.34 4.28 1.6068 -5 -2 3 2 57.64 5.89 1.5992 3 -3 3 2 58.18 13.14 1.5857 0 5 2 2 58.52 1.09 1.5773 2 2 3 2 58.57 2.26 1.5761 4 -5 1 2 58.61 4.19 1.5751 -1 6 1 2 58.85 1.22 1.5693 -3 -4 4 2 58.86 1.16 1.5690 -3 -3 5 2 59.98 5.88 1.5422 4 0 2 2 60.09 5.28 1.5397 0 -3 5 2 60.47 1.14 1.5309 -3 6 2 2 60.72 1.21 1.5253 -5 -2 1 2 60.81 6.14 1.5231 -6 0 4 2 62.41 7.22 1.4880 -5 3 5 2 62.48 2.98 1.4864 -6 4 3 2 62.54 1.24 1.4853 -4 0 6 2 62.62 2.25 1.4836 -2 0 6 2 62.71 3.84 1.4816 -2 -5 4 2 62.79 2.98 1.4798 -3 1 6 2 63.23 1.05 1.4707 -6 4 1 2 63.61 5.68 1.4628 -1 6 2 2 63.76 1.81 1.4596 -6 -1 2 2 63.90 2.61 1.4568 -3 5 4 2 64.51 1.50 1.4445 1 4 3 2 64.95 2.34 1.4358 -6 0 5 2 65.02 11.93 1.4345 -6 3 0 2 65.17 12.82 1.4314 1 0 5 2 65.36 1.40 1.4277 2 3 3 2 65.72 1.46 1.4209 -2 7 0 2 66.23 2.57 1.4111 -4 -2 6 2 66.31 1.33 1.4096 1 -7 1 2 66.40 10.79 1.4078 2 -6 3 2 66.53 3.32 1.4056 -2 -6 2 2 67.27 2.11 1.3917 -6 -1 1 2 67.46 1.85 1.3884 -5 -1 6 2 67.51 3.86 1.3874 -2 -6 1 2 68.07 2.80 1.3774 -2 4 5 2 68.25 1.31 1.3742 1 -7 2 2 68.88 1.15 1.3631 -7 1 4 2 69.36 3.18 1.3549 4 -4 3 2 69.78 1.32 1.3478 4 4 0 2 70.80 1.09 1.3307 2 6 0 2 71.37 1.26 1.3216 -2 7 2 2 71.60 3.55 1.3179 2 -1 5 2 71.60 1.54 1.3179 6 -3 1 2 72.09 1.20 1.3102 -7 1 5 2 72.34 1.20 1.3062 -1 -7 2 2 73.05 5.18 1.2953 -3 5 5 2 73.36 1.14 1.2906 -3 -6 2 2 74.23 2.11 1.2775 -7 -1 4 2 74.37 1.22 1.2755 2 -6 4 2 75.99 1.32 1.2523 -5 -4 1 2 77.68 1.05 1.2293 -5 7 3 2 78.24 2.52 1.2219 -1 3 6 2 80.00 1.02 1.1994 4 -4 4 2 83.06 2.57 1.1628 0 -8 3 2 84.94 1.07 1.1418 -1 -6 6 2 88.33 1.04 1.1064 -7 6 5 2 88.91 2.28 1.1008 -6 -4 6 2 89.98 2.43 1.0904 5 3 2 2 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.