Science. 1973 Jan 5;179(4068):74-6. doi: 10.1126/science.179.4068.74.
A spinel troctolite and an anorthosite from the Apollo 16 landing site represent contrasting types of "primitive" lunar cumulates. The two rock types probably formed from the same parent magma type, a high-alumina magnesian basalt, with the troctolite forming earlier by crystal settling, and the anorthosite later, possibly by flotation.
一块尖晶石橄辉岩和一块来自阿波罗 16 号着陆点的斜长岩代表了两种截然不同的“原始”月球堆积岩。这两种岩石类型可能是由同一种母岩浆类型形成的，即高铝镁质玄武岩，其中尖晶石通过晶体沉降较早形成，而斜长岩可能通过浮选较晚形成。
