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Discovery of new mineral addibischoffite, Ca_2Al_6Al_6O_(20) ,IN A Ca-Al-Rich refractory inclusion from the Acfer 214 CH3 meteorite

Ma, Chi and Krot, Alexander N. and Nagashima, Kazuhide (2016) Discovery of new mineral addibischoffite, Ca_2Al_6Al_6O_(20) ,IN A Ca-Al-Rich refractory inclusion from the Acfer 214 CH3 meteorite. Meteoritics and Planetary Science, 51 (S1). Art. No. 6016. ISSN 1086-9379. https://resolver.caltech.edu/CaltechAUTHORS:20161220-074540712

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Abstract

Introduction: During a mineralogy investigation of the Acfer 214 CH3 carbonaceous chondrite, a new calcium aluminate mineral, named “addibischoffite”, Ca_2Al_6Al_6O_(20) with the P-1 aenigmatite structure, was identified in a Ca-Al-rich inclusion (CAI). Field-emission scanning electron microscope, electron back-scatter diffraction, electron microprobe and ion microprobe were used to characterize its chemical and oxygen-isotope compositions, structure, and associated phases. Synthetic CaAl_6O_(10) was reported but not fully characterized [e.g., 1]. Presented here is its first natural occurrence as a new refractory mineral in a primitive meteorite. The mineral has been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA 2015-006). The name is in honor of Addi Bischoff, a cosmochemist at Münster University, Germany, for his many contributions to research on CAIs in carbonaceous chondrites, including CH chondrites.


Item Type:Article
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http://onlinelibrary.wiley.com/doi/10.1111/maps.12705/epdfPublisherArticle
ORCID:
AuthorORCID
Ma, Chi0000-0002-1828-7033
Krot, Alexander N.0000-0002-2278-8519
Additional Information:© 2016 Wiley. First published: 20 July 2016.
Issue or Number:S1
Record Number:CaltechAUTHORS:20161220-074540712
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20161220-074540712
Official Citation:Ma C, Krot AN, Nagashima K (2016) Discovery of new mineral addibischoffite, Ca2Al6Al6O20, in a Ca-Al-rich refractory inclusion from the Acfer 214 CH3 meteorite. Meteoritics and Planetary Science, 51 (S1), Abstract No. 6016.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72959
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:20 Dec 2016 16:03
Last Modified:09 Mar 2020 13:19

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