Ceniceros Cienega de Ceniceros, Chihuahua, Mexico Fell 20 August 1988, 1020 hr Stone. Ordinary chondrite (H3.7). A single stone weighing 1025 g fell in a field and was recovered that day by a farmer, J. Mostalac, P. O. Box 73-309, 03310 Mexico. Classification, unequilibrated, 29.1% total iron, olivine Fa1-30, A. L. Graham, British Museum (Natural History), London, pers. comm., 1989. Sub-type classification, D. W. Sears, University of Arkansas, Fayetteville, pers. comm., 1989. 147 g, British Museum (Natural History). Source