Campo del Cielo Meteorite weight 62 grams (5 x 4 x 1cm)

Location: Campo del Cielo, Gran Chaco Gualamba, Argentina, about 500 miles north-northwest of Buenos Aries. Latitude 27 degrees 39 minutes South, Longitude 61 degrees 44 minutes West.

Structural Class: Coarse octahedrite, Og, Widmanstatten bandwidth 3.0 0.6 mm.

# Chemical Class: Group I, 6.68% Ni, 0.43% Co, 0.25% P, 87 ppm Ga, 407 ppm Ge, 3.6 ppm Ir.

Time of Fall: 4,000 to 6,000 years ago

The first record of the Campo was in 1576. A Spanish governor learned of the iron from the Indians who reportedly believed that it had fallen from heaven. The governor sent an expedition under the command of one Captain de Miraval who brought back a few pieces of a huge iron mass he called Meson de Fierro (large table of iron).

The larger Campo del Cielo meteorites are found in and around a series of small craters in the southwestern part of the strewn field. The largest crater is 78 by 65 meters. A smaller one is 56 meters in diameter and 5 meters deep. All together, searchers have found at least 12 craters.

Time of the Fall Scientists have attempted to date the Campo fall by carbon dating of charred wood found in the craters. Dates of 5800 years (plus or minus 200 years) and 3950 years (plus or minus 90 years) have been obtained. These dates are consistent with an Indian oral tradition that the irons fell from heaven.

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