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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: Mineralogy and petrology of lunar meteorite Northwest Africa 2977 consisting of olivine cumulate gabbro including inverted pigeonite

Fig. 2

Compositional variation of pyroxenes in lunar meteorite Northwest Africa (NWA) 2977 from polished thin section (PTS) 01-1 (red circles) projected onto quadrilateral isotherms (Sack and Ghiorso, 1994). The fields were taken from Jolliff et al. (2003). Blue squares represent the average of augite blebs (Wo39En47Fs14) and host orthopyroxene (Wo5En70Fs25), and the blue diamond represents the bulk composition of inverted pigeonite (Wo15En63Fs22; Fig. 1e). Px no. indicates the pyroxene number

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