The Cali meteorite fall: A new H/L ordinary chondrite |
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| Authors: | Josep M TRIGO‐RODRÍGUEZ Jordi LLORCA Alan E RUBIN Jeffrey N GROSSMAN Derek W G SEARS Mateo NARANJO Stacy BRETZIUS Mar TAPIA Marino H GUARÍN SEPÚLVEDA |
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| Institution: | 1. Institute of Space Sciences‐CSIC. Campus UAB, Facultat de Ciències, Torre C5‐p2. Bellaterra, Barcelona 08193, Spain;2. Institut d'Estudis Espacials de Catalunya (IEEC), Gran Capità 2‐4, Ed. Nexus, Barcelona 08034, Spain;3. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain;4. Institute of Geophysics and Planetary Physics, University of California, Los Angeles, California 90095‐1567, USA;5. U.S. Geological Survey, Reston, Virginia 20192, USA;6. Arkansas Center for Space and Planetary Sciences, University of Arkansas, Fayetteville, Arkansas 72701, USA;7. Institut de Ciències del Mar (CSIC), Barcelona, Spain;8. Departamento de Ciencias Naturales y Matemáticas, Facultad de Ingeniería, Universidad Javeriana de Cali, Colombia |
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| Abstract: | Abstract— The fall of the Cali meteorite took place on 6 July 2007 at 16 h 32 ± 1 min local time (21 h 32 ± 1 min UTC). A daylight fireball was witnessed by hundreds of people in the Cauca Valley in Colombia from which 10 meteorite samples with a total mass of 478 g were recovered near 3°24.3′N, 76°30.6′W. The fireball trajectory and radiant have been reconstructed with moderate accuracy. From the computed radiant and from considering various plausible velocities, we obtained a range of orbital solutions that suggest that the Cali progenitor meteoroid probably originated in the main asteroid belt. Based on petrography, mineral chemistry, magnetic susceptibility, thermoluminescence, and bulk chemistry, the Cali meteorite is classified as an H/L4 ordinary chondrite breccia. |
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