Campo Del Cielo Complete Slice of an Enigmatic Meteorite
Iron, coarse octahedrite
Gran Chaco, Argentina
Somewhat similar to the previous lot, this complete slice is part of an unusual, highly-silicated Campo del Cielo meteorite. While most Campos contain occasional silicate inclusions, this specimen contains an abundance of such inclusions and was, as a result, initially believed to be from a completely different meteorite which happened to be in the Campo strewn field. This is, however, is a complete slice of a Campo, as the signature of its metallic composition matches too closely with other Campos.
Suspended in the nickel-iron matrix are large, angular inclusions that are compositionally and chemically chondritic in naturein effect, the basics of a stone meteorite. Threads of nickel-iron have penetrated these silicates as a result of a shock event in outer space. The external rim is somewhat nodular, the result of the different melting points of the silicates and nickel-iron.
113 x 87 x 4mm (4.5 x 3.5 x 0.2in) and 121 grams