Ahrensite Ma C, Tschauner O, Beckett J R, Liu Y, Rossman G R, Sinogeikin S V, Smith J S, Taylor L A Geochimica et Cosmochimica Acta 184 (2016) 240-256 Ahrensite, gamma-Fe2SiO4, a new shock-metamorphic mineral from the Tissint meteorite: Implications for the Tissint shock event on Mars Locality: Tissint meteorite _database_code_amcsd 0021229 CELL PARAMETERS: 8.1629 8.1629 8.1629 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 543.918 Density (g/cm3): 4.355 MAX. ABS. INTENSITY / VOLUME**2: 43.30440130 RIR: 3.238 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.83 26.51 4.7129 1 1 1 8 30.99 16.95 2.8860 2 2 0 12 36.51 100.00 2.4612 3 1 1 24 38.19 3.87 2.3564 2 2 2 8 44.39 47.98 2.0407 4 0 0 6 48.62 4.39 1.8727 3 3 1 24 55.12 5.89 1.6662 4 2 2 24 58.78 6.70 1.5710 3 3 3 8 58.78 23.92 1.5710 5 1 1 24 64.59 55.70 1.4430 4 4 0 12 67.94 3.16 1.3798 5 3 1 48 73.35 2.43 1.2907 6 2 0 24 76.53 9.07 1.2448 5 3 3 24 77.58 2.55 1.2306 6 2 2 24 81.74 6.18 1.1782 4 4 4 8 89.94 2.93 1.0908 6 4 2 48 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.