Medium Octahedrite
Item: 24.1 Dimensions: 360 x 140 x 8 mm Weight: 3.136 kg
Provenance: University of California, Los Angeles
This is large etched slice with a few sizable troilite inclusions.
Partial/complete: Complete slice
Cube: ~15mm x 15mm x 15mm ≈ 15mm3


Country: Mexico
Region: Chihuahua
Found: ~1969
Group: Iron
Type: Octahedrite, Medium
Class: IIIB
Total known weight: ~130.6kg

Purchased and distributed by the University of California, Los Angeles, UCLA. A single mass of 113.6kg was purchased by the Univ. of California. It was found about 5 miles SW of Buenaventura, probably on the Eveata Ranch, classification and analysis, E.R.D.Scott et al., Meteoritics, 1977, 12, p.425; see also, Met. Bull. 55, Meteoritics, 1978, 13, p.332. Analysis data listed, 9.92% Ni, 17.4 ppm Ga, 34.5 ppm Ge, 0.011 ppm Ir, A.Kracher et al., GCA, 1980, 44, p.773. Study of trace element partitioning between martensite, taenite and tetrataenite, K.L.Rasmussen et al., LPSC, 1984, 15, p.665 (abs.). Further analysis, M.Hoashi et al., Chem. Geol., 1992, 98, p.1. Oxygen isotopic composition, R.N.Clayton and T.K.Mayeda, GCA, 1996, 60, p.1999. Further analysis, J.T.Wasson, GCA, 1999, 63, p.2875.