Transmission electron microscope texture and crystal chemistry of coexisting ortho‐ and clinopyroxene in the Antarctic ureilite Frontier Mountain 90054: Implications for thermal history

• Published in: Meteoritics & Planetary Science
• Main Authors: TRIBAUDINO, M., FIORETTI, A. M., MARTIGNAGO, F., MOLIN, G.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1997
• Subjects: Antarc*; Antarctic; Antarctica
• Online Access: http://dx.doi.org/10.1111/j.1945-5100.1997.tb01551.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.1997.tb01551.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.1997.tb01551.x

Abstract— Frontier Mountain (FRO) 90054, from Antarctica, is a rare clino‐ and orthopyroxene‐bearing ureilite with a coarse equigranular oriented texture (grains up to 3 mm); it is classified as a low‐shock Ca‐rich type. The crystal chemistry of its clinopyroxene (Wo 39.3 En 54.6 Fs 6.1 ), orthopyro...