Parisite-(Ce) Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R050308 Donnay G, Donnay J D H American Mineralogist 38 (1953) 932-963 The crystallography of bastnaesite, parasite, roentgenite, and synchisite CELL PARAMETERS: 7.120000 7.120000 84.10000 90.00000 90.00000 120.0000 SPACE GROUP: R3 X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 6.35 100.00 13.9715 0 0 6 12.69 7.12 6.9857 0 0 12 19.07 34.96 4.6572 0 0 18 25.07 42.60 3.5530 1 1 0 25.88 2.15 3.4434 1 1 6 25.88 2.14 3.4434 2 -1 6 28.18 5.04 3.1669 1 1 12 28.18 5.02 3.1669 2 -1 12 31.67 22.20 2.8248 1 1 18 31.67 22.15 2.8248 2 -1 18 32.03 3.08 2.7943 0 0 30 38.66 5.52 2.3286 0 0 36 41.09 3.63 2.1964 1 1 30 41.09 3.68 2.1964 2 -1 30 44.14 15.64 2.0513 3 0 0 44.64 1.80 2.0295 3 0 6 44.64 1.80 2.0295 0 3 6 46.10 1.17 1.9682 3 0 12 46.10 1.17 1.9682 0 3 12 46.62 8.01 1.9476 2 -1 36 46.62 7.93 1.9476 1 1 36 48.48 8.14 1.8773 0 3 18 48.48 8.14 1.8773 3 0 18 51.42 4.79 1.7765 2 2 0 55.33 3.91 1.6598 4 -2 18 55.33 3.92 1.6598 2 2 18 55.55 1.34 1.6536 3 0 30 55.55 1.34 1.6536 0 3 30 60.08 3.33 1.5392 3 0 36 60.08 3.33 1.5392 0 3 36 65.60 1.58 1.4225 1 1 54 65.60 1.57 1.4225 2 -1 54 66.13 2.19 1.4124 4 -2 36 66.13 2.19 1.4124 2 2 36 70.03 1.63 1.3429 1 4 0 70.03 1.63 1.3429 4 1 0 73.33 1.40 1.2903 1 4 18 73.33 1.40 1.2903 -1 5 18 73.33 1.40 1.2903 5 -1 18 73.33 1.40 1.2903 4 1 18 76.99 1.26 1.2379 3 0 54 76.99 1.26 1.2379 0 3 54 82.95 1.00 1.1633 5 -1 36 82.95 1.00 1.1633 -1 5 36 82.95 1.00 1.1633 -1 5 36 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.