Remarkable Diversity of Refractory Inclusions in the Miller Range 090019 CO3.1 ChondriteWe have characterized the mineralogy, textures, bulk compositions, modal abundances and some mineral compositions in a suite of approximately 140 refractory inclusions from the MIL090019 carbonaceous chondrite. All of these 140 inclusions are found in a single thin section of this CO3.1 chondrite. These inclusions range from grossite- and hibonite-rich varieties, melilite-, spinel-, fassaite-diopside- and anorthite-rich types, and include a subset of aluminous AOAs (amoeboidal olivine aggregates). Grossite- and hibonite-bearing inclusions were discussed briefly in previous abstracts. X-ray mapping by energy dispersive spectrometry has permitted us to extract the bulk compositions of these inclusions from hyperspectral x-ray datasets. The bulk compositions of these inclusions represent the full range of recognized CAI (Calcium-Aluminum–rich Inclusions) types.
Document ID
20190001835
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Ross, D. Kent (Texas Univ. El Paso, TX, United States)
Simon, J. I. (NASA Johnson Space Center Houston, TX, United States)
Simon, S. B. (New Mexico Univ. Albuquerque, NM, United States)