Glasses in Tucson (IRUNGR): A SIMS study

MARIA EUGENIA VARELA; ZINNER ERNST,; KURAT GERO,

Houston

Congreso; XXXIX Lunar and Planetary Science Conference. .; 2008

Tucson is a unique ataxite iron meteorite with about 8 vol% silicates [1]. The high Si (0.8 wt%) and the very low Ge content of the metal [2] make Tucson distinctive among the iron meteorites with silicate inclusions [3]. Silicate inclusions from Tucson, first reported by [4], have a remarkably reduced state [5]. Detailed chemical and mineralogical studies of these inclusions [1, 6] include a description of glasses that occur between crystalline phases. However, there has been no mention of the presence of primary glass in-clusions in olivines. Here we report the first trace ele-ment study of glasses from glass inclusions in olivines and mesostasis glasses occurring between phases in the Tucson iron meteorite.