Particularities of rare element distribution in high-aluminium basalts from mare and highland regions of the Moon (based on SR-XFA data)

X-ray fluorescence analysis using synchrotron radiation (SR-XFA) has been applied for determination of rare elements (Rb, Sr, Y, Zr, Nb, Ba, La, and Ce) in lunar high aluminium (HA) and very high aluminium (VHA) basalts of Apollo 12, 14, and 15 (new multielement SR-XFA analysis of 50 lunar fragments). A comparison of all SR-XFA data for different lunar rocks (multielement SR-XRF analysis more than 300 lunar fragments) makes it possibile to suggest a common origin of HA and VHA basalts. These rocks are the result of partial melting of various basaltic magmas, but have not originated from lunar magmatic ocean