Northupite Dal Negro A, Giuseppetti G, Tadini C Tschermaks Mineralogische und Petrographische Mitteilungen 22 (1975) 158-163 Refinement of the crystal structure of northupite: Na3Mg(CO3)2Cl Locality: Searles Lake, California, USA _database_code_amcsd 0015654 CELL PARAMETERS: 14.0690 14.0690 14.0690 90.000 90.000 90.000 SPACE GROUP: Fd3 X-RAY WAVELENGTH: 1.541838 Cell Volume: 2784.772 Density (g/cm3): 2.373 MAX. ABS. INTENSITY / VOLUME**2: 8.975166506 RIR: 1.232 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 10.89 74.44 8.1227 1 1 1 8 17.83 28.43 4.9741 2 2 0 12 20.94 1.38 4.2420 3 1 1 24 21.88 7.28 4.0614 2 2 2 8 25.32 21.44 3.5173 4 0 0 6 27.64 18.98 3.2276 3 3 1 24 31.14 18.22 2.8718 4 2 2 24 33.08 26.95 2.7076 5 1 1 24 33.08 47.69 2.7076 3 3 3 8 36.11 100.00 2.4871 4 4 0 12 37.83 13.89 2.3781 5 1 3 24 40.55 8.85 2.2245 6 0 2 12 42.12 11.90 2.1455 5 3 3 24 42.63 38.19 2.1210 6 2 2 24 44.62 11.26 2.0307 4 4 4 8 46.07 6.76 1.9701 7 1 1 24 46.07 1.64 1.9701 5 5 1 24 48.42 6.73 1.8800 6 2 4 24 49.78 3.23 1.8316 7 3 1 24 52.00 35.24 1.7586 8 0 0 6 55.41 6.03 1.6580 8 2 2 24 56.66 3.15 1.6245 7 1 5 24 56.66 2.85 1.6245 5 5 5 8 57.07 24.35 1.6138 6 6 2 24 60.29 2.46 1.5351 8 2 4 24 61.87 2.98 1.4998 6 6 4 24 63.03 1.45 1.4748 9 3 1 24 64.94 16.70 1.4359 8 4 4 24 66.08 4.79 1.4140 7 7 1 24 67.95 2.23 1.3796 8 2 6 24 69.06 1.70 1.3601 7 7 3 24 69.06 3.06 1.3601 9 5 1 24 69.42 4.83 1.3538 6 6 6 8 69.42 1.97 1.3538 10 2 2 24 71.98 3.05 1.3119 9 3 5 24 76.62 9.28 1.2435 8 8 0 12 80.49 1.75 1.1933 11 3 3 24 80.83 1.68 1.1890 10 6 2 24 80.83 2.69 1.1890 10 2 6 24 85.00 1.16 1.1411 12 2 2 24 85.00 1.30 1.1411 10 6 4 24 86.03 1.01 1.1300 11 5 3 24 87.75 1.91 1.1123 12 0 4 12 87.75 3.21 1.1123 12 4 0 12 88.79 1.63 1.1020 9 9 1 24 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.