Igneous Rocks from Apollo 16 Rake Samples

摘要: Results are reported for a study of seven holocrystalline feldspathic rocks (including spinel troctolite and six melt rocks) one mare basalt clast from the Apollo-16 rake samples. The composition grain structure each rock is described in detail. Only considered good candidate primary igneous cumulate formed during original differentiation lunar crust. It shown that probably resulted shock melting followed by rapid crystallization heterogeneous highland material compositional variations due to mixing various amounts cumulates KREEP components. suggested may have been derived Mare Fecunditatis, although nearest site Nectaris.