Gemstone of the Solar System
Item: 59.1 Dimensions: 360 x 220 x 3 mm Weight: 1393 g
Partial/complete: Partial slice
Cube: ~15mm x 15mm x 15mm ≈ 15mm3

Esquel

Country: Argentina
Region: Chubut
Found: 1951
Group: Stony-Iron
Type: Pallasite
Class: PMG
Total known weight: 755kg

A large mass of about 1500lbs was found embedded in the soil, L.O.Giacomelli, Meteoritos hallados en la Patagonia, Argentina Austral, 1962, 34, p.14, M.H.Hey, Cat. Met., 1966, p.156. The weight of the main mass is 755kg and not 1500kg as mentioned, O.A.Turone, Buenos Aires, priv. comm. to J.Koblitz, 1994. Cooling rate and olivine composition, Fa11.7, P.R.Buseck and J.I.Goldstein, Bull. Geol. Soc. Amer., 1969, 80, p.2141. Classification and analysis of metal, main group pallasite, 8.50% Ni, 21.5 ppm Ga, 55.5 ppm Ge, 0.023 ppm Ir, E.R.D.Scott, GCA, 1977, 41, p.349. Study of olivine-metal texture, E.R.D.Scott, GCA, 1977, 41, p.693. Mineralogy and petrology, P.R.Busek, GCA, 1977, 41, p.711. Study of chemical zoning of olivine, M.Miyamoto and H.Takeda, LPSC, 1994, 25, p.921 (abs.). Ar and Xe isotopic composition of silicate, Y.N.Miura et al., Papers 21st Symp. Ant. Met., NIPR Tokyo, 1996, p.119 (abs.). Oxygen isotopic composition, R.N.Clayton and T.K.Mayeda, GCA, 1996, 60, p.1999; see also, I.Jabeen et al., Antarct. Meteorite Res., 1998, (11), p.122. Petrography, modal and trace element analysis, F.Ulff-M