Diopside Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060861 Bindi L, Downs R T, Harlow G E, Safonov O G, Litvin Y A, Perchuk L L, Uchida H, Menchetti S American Mineralogist 91 (2006) 802-808 Compressibility of synthetic potassium-rich clinopyroxene: In situ high-pressure single-crystal X-ray study Sample: 939-1, P = .46 GPa CELL PARAMETERS: 9.682800 8.888000 5.248200 90.00000 105.9510 90.00000 SPACE GROUP: C2/c X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 20.10 3.89 4.4328 0 2 0 24.52 2.84 3.6403 1 1 1 26.81 8.41 3.3331 0 2 1 27.84 24.66 3.2112 2 2 0 29.95 100.00 2.9895 -2 2 1 30.56 26.63 2.9309 3 1 0 30.94 36.36 2.8960 -3 1 1 31.83 1.21 2.8169 1 3 0 35.16 24.12 2.5561 -1 3 1 35.29 1.84 2.5469 -2 0 2 35.57 40.58 2.5280 0 0 2 36.01 41.60 2.4977 2 2 1 37.93 1.38 2.3753 1 3 1 39.52 17.04 2.2832 3 1 1 40.90 9.71 2.2091 1 1 2 40.91 1.55 2.2083 -2 2 2 41.15 10.00 2.1960 0 2 2 42.26 9.72 2.1408 3 3 0 42.55 16.80 2.1271 -3 3 1 43.04 8.35 2.1038 -4 2 1 43.96 1.04 2.0619 4 2 0 44.69 19.71 2.0299 0 4 1 44.81 10.89 2.0244 -4 0 2 45.48 6.68 1.9962 2 0 2 46.18 7.53 1.9676 -1 3 2 49.42 2.11 1.8455 3 3 1 50.16 2.41 1.8202 2 2 2 50.06 6.54 1.8235 5 1 0 50.59 3.17 1.8057 1 3 2 52.58 12.39 1.7418 1 5 0 53.14 1.82 1.7246 -5 1 2 54.86 1.42 1.6746 -1 5 1 55.14 4.44 1.6666 0 4 2 55.11 6.74 1.6676 -3 1 3 56.49 15.19 1.6298 -2 2 3 56.88 13.74 1.6198 -5 3 1 57.42 5.41 1.6056 4 4 0 58.60 1.73 1.5762 5 3 0 59.57 3.40 1.5528 6 0 0 60.12 4.84 1.5398 3 5 0 60.45 5.00 1.5321 -6 0 2 60.93 2.33 1.5212 -6 2 1 61.35 6.42 1.5117 4 0 2 61.38 1.22 1.5110 -5 3 2 61.68 12.90 1.5045 -1 3 3 62.66 1.67 1.4833 2 4 2 62.93 4.15 1.4776 0 6 0 64.25 1.51 1.4503 4 4 1 64.36 2.14 1.4480 -6 2 2 65.23 1.49 1.4308 4 2 2 65.88 1.99 1.4183 0 6 1 66.25 16.11 1.4112 5 3 1 66.51 9.76 1.4063 -3 5 2 66.85 3.91 1.3999 1 5 2 67.69 4.69 1.3846 2 2 3 68.24 1.04 1.3747 -2 4 3 68.43 1.08 1.3715 -7 1 1 70.17 1.38 1.3415 0 4 3 70.80 6.17 1.3312 -7 1 2 71.73 4.04 1.3161 6 2 1 71.72 1.09 1.3162 7 1 0 71.43 3.20 1.3209 -5 3 3 73.14 3.83 1.2941 -3 1 4 73.47 2.20 1.2891 -1 1 4 74.21 3.13 1.2781 -2 6 2 74.37 5.50 1.2757 0 6 2 74.53 1.32 1.2735 -4 0 4 75.18 3.20 1.2640 0 0 4 75.71 1.36 1.2565 -7 3 1 76.25 1.17 1.2489 4 4 2 76.92 6.70 1.2396 3 5 2 77.70 1.47 1.2291 -1 7 1 79.38 2.09 1.2072 1 7 1 82.90 1.54 1.1646 8 0 0 83.95 1.04 1.1527 -6 4 3 83.79 3.22 1.1545 -6 0 4 84.95 1.05 1.1416 6 2 2 88.52 1.60 1.1045 2 2 4 88.52 1.60 1.1045 2 2 4 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.