The slice shows the crystals transparency
|Group||Main Group Pallasite (MGP)|
|Composition||8.5% Ni, 21.5 ppm Ga, 55.5 ppm Ge, 0.023 ppm Ir|
|Found date||between 1927 and 1934|
Esquel is a pallasite meteorite found near Esquel, a patagonian town in the northwest part of the province of Chubut (Argentina). Pallasites are a type of stony–iron meteorite that when cut and polished show beautiful yellowish olivine (peridot) crystals.
In 1951 a farmer uncovered a meteorite in an unknown location near Esquel while digging a hole for a water tank. The meteorite was purchased from the finders and taken to the United States in 1992 by meteorite expert Robert Haag. The Esquel meteorite is known world-wide among collectors and the meteoritical scientific community.
Classification and composition
Esquel is a main group pallasite (MGP).
The Meteoritical Bulletin no. 29 (1964) reports a main mass of "about 1500 kg". However O. A. Turone claimed a main mass weight of 755 kilograms (1,664 lb). Robert Haag, the buyer of the main mass, reported a weight of 680 kilograms (1,500 lb). Almost all of the Esquel ever found on the market is cut from his piece.
Notes and references
- Meteoritical Bulletin, no. 29, Moscow (1964)
- "The weight of the main mass is 755kg and not 1500kg as indicated", O.A.Turone, Buenos Aires, priv. comm. to J.Koblitz, 1994. MetBase 7.0 for Windows. Author: Joern Koblitz, The MetBase Library of Meteoritics and Planetary Sciences, Benquestrasse 27, D-28209 Bremen, Germany
- American Museum of Natural History: Jewels from space
- Image of the main mass left Robert Haag website