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Discovery of Abundant Tremolite in a Carbonaceous Chondrite Fragment from the Almahata Sitta Meteorite
- Publication Year :
- 2020
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 2020.
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Abstract
- Almahata Sitta (AhS) is classified as an anomalous, polymict ureilite and was observed prior to Earth impact as the F-type asteroid 2008 TC3 [e.g., 1-2]. As part of our characterization of this unusual meteorite [e.g., 3], we have been using microscopic infrared spectroscopy (µ-FTIR) to measure the mineralogy of fragments identified as carbonaceous chondrites (CC). In fragment 202 we have discovered unambiguous spectral evidence for a minimum of several vol% amphibole (specifically, tremolite), a mineral that is not known to occur in volumetrically significant abundances (defined here as >1%) in carbonaceous chondrites
- Subjects :
- Space Sciences (General)
Subjects
Details
- Language :
- English
- Database :
- NASA Technical Reports
- Publication Type :
- Report
- Accession number :
- edsnas.20200001829
- Document Type :
- Report