Fig. 2: Petrography and composition of the enclosed melt in the noritic anorthosite.
From: Orthopyroxene-dominated upper mantle melting built the early crust of the Moon
a Backscattered electron image, and b Energy dispersive X-ray spectroscopy mapping of the melt-bearing noritic anorthosite (outlined by yellow contour). The two enclosed melts are highlighted in red contours. The chemical composition ranges of minerals in the matrix (Mg# for mafic minerals, Wo for pyroxene, An for plagioclase) are also shown for comparison. c Raman spectra of minerals and the enclosed melts from highland clasts in the CE5C0800YJYX132GP. d CI-normalized REE patterns of the enclosed melt, clinopyroxene, plagioclase and orthopyroxene in the noritic anorthosite. e Ni contents (ppm) versus Ni/Co of the enclosed melt compared to the Apollo impact melts from Apollo 14, Apollo 15, Apollo 16 and Apollo 17 (Apollo IM), and the Apollo mare basalts. Ol: olivine, LCP: low-Ca pyroxene, HCP: high-Ca pyroxene. Trace-element data are reported in Supplementary Data 2. Data sources of the Apollo impact melts are given in Supplementary Data 4 together with a complete reference list; data of mare basalts are from the database at https://www3.nd.edu/~cneal/Lunar-L/.
