What is the name of the geochemical component that has no known terrestrial counterpart which was discovered in The Genesis Rock retrieved during the Apollo 15 mission?
Apollo program rock found during the Apollo Program is dubbed the Genesis Rock, retrieved by astronauts David Scott and James Irwin during the Apollo 15 mission. This anorthosite rock is composed almost exclusively of the calcium-rich feldspar mineral anorthite, and is believed to be representative of the highland crust. A geochemical component called KREEP was discovered by Apollo 12, which has no known terrestrial counterpart. KREEP and the anorthositic samples have been used to infer that the outer portion of the Moon was once completely molten (see lunar magma ocean). Almost all the rocks show evidence of impact process effects. Many samples
Genesis Rock Genesis Rock The Genesis Rock is a sample of Moon rock retrieved by Apollo 15 astronauts James Irwin and David Scott in 1971 during the second lunar EVA, at Spur crater. It is currently stored at the Lunar Sample Laboratory Facility in Houston, Texas. It is sample number 15415. Chemical analysis of the Genesis Rock indicated it is an anorthosite, composed mostly of a type of plagioclase feldspar known as anorthite. The rock was formed in the early stages of the Solar System, at least 4 billion years ago. It was originally thought they had found a piece of the