Petrographic and mineralogical study of new EH melt rocks and a new enstatite chondrite grouplet

Details Petrographic and mineralogical study of new EH melt rocks and a new enstatite chondrite grouplet Petrographic and mineralogical study of new EH melt rocks and a new enstatite chondrite grouplet

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998m%26ps...33..501l&link_type=abstract

Meteoritics & Planetary Science, vol. 33, no. 2, pages 501-511.

Physics

21

Scientific paper

Enstatite chondrites are classified into EH and EL groups, and some of them were once melted. In this paper, we report petrography and mineral chemistry of five new Antarctic enstatite chondrites. Y793225 is characterized by intermediate properties between EH and EL, and probably represents a new grouplet of enstatite chondrites. The three paired meteorites (Y8404, Y8414 and Y86004) may have cooled rapidly near the surface of the parent body as impact EH melt rocks. Y82189 is also classified as EH melt rock, but experienced slow cooling as Y793225. Y82189 contains the first occurrence of phlogopite in enstatite meteorites.

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