Fig. 5: Chemical composition of the bulk rock, olivine and pyroxene from the Chang’e-5 basalts.
From: Surges in volcanic activity on the Moon about two billion years ago
a Olivine Fo vs. bulk-rock Mg# [defined as Mg/(Mg + Fe) × 100, mole fraction]. The gray area was constructed using olivine-basaltic melt (KdFe-MgOl-Melt = 0.33; ref. 53). Olivine from Apollo 12 basalts and meteorite NWA 032 are plotted for comparison59. The Chang’e-5 basalts are thought to have a similar source to the Apollo 12 basalts. The Mg# of the bulk rock is from ref. 10. Abbreviation: Fo, forsterite. b Al/Ti vs. pyroxene Fe# [defined as Fe/(Fe + Mg) × 100, mole fraction]. Data for Chang’e-5 pyroxene are from refs. 5, 9, 10. The Apollo low-Ti and high-Ti basalts are from a MoonDB search (http://search.moondb.org/).
