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

• Main Authors: M. Tribaudino, A. M. Fioretti, F. Martignago, G. Molin
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: 1997
• Subjects: Antarctic; The Antarctic; Frontier Mountain; Antarc*; Antarctica
• Online Access: http://hdl.handle.net/2318/1848207

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)), orthopyroxene (En(8...