Historical Information about the Campo del Cielo Meteorite
History of The Campo del Cielo
Meteorite
The Campo del Cielo meteorite site
was first discovered by the Spanish in 1576 in the Gran Chaco Gualamba
region of Argentina, about 500 miles north-northwest of Buenos Aries The location of the find was Campo del Cielo (or the field
of heaven), an appropriate name for the location of a meteorite strewn field. Since the Indians
believed that the irons fell from heaven the name is undoubtedly derived
from the meteorites found in this area, which is an open brush-covered plain having little water and few rocks, making it great meteorite hunting country. Subsequent searches have found Campos over a large region.
Time of the Fall
Scientists have estimated the date
of the Campo fall using radiocarbon 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 the oral tradition of the indigenous people inhabiting the area.
Structure of the Campo del Cielo
The Campo del Cielo is a polycrystalline coarse octahedrite. The Widmanstatten bands
are thicker than those at Canyon Diablo or Odessa, but still have the same coarse octahedrite classification.
Compositon of Campo del Cielo
Meteorites
The Campo del Cielo is classified
in Group I, , 6.68% Ni, 0.43% Co, 0.25% P, 87 ppm Ga, 407 ppm Ge, 3.6 ppm
Ir. Of course, almost all of the remaining portion of the meteorite is
iron.
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