anorthosite
Lunar anorthosite, Apollo 16
Image credit: NASA
A coarse-grained igneous rock made largely of plagioclase feldspar (95%), with small amounts of pyroxene (4%), olivine, and iron oxides. Anorthosite makes up about 60% of Earth's crust.
Highland Anorthosite
When the moon first formed it probably had a surface composed mostly of rocks. This rock type still exists today and makes up the lunar highlands, which is the lighter-colored part of the moon visible from Earth. This 4.
Anorthosite: An igneous rock made up almost entirely of plagioclase feldspar. This rock is a major part of the lunar highlands.
Antenna: A conductor by which electromagnetic waves are transmitted or received.
Anorthosite
Rock of aluminum and calcium silicates found in the lunar highlands.
Aphelion ...
ANORTHOSITE
Anorthosite is a type of rock found on the moon, on lunar highlands. Anorthosite is composed of aluminum and calcium silicates.
...
anorthosite (NASA Thesaurus) A group of essentially monomineralic plutonic igneous rocks composed almost entirely of plagioclass feldspar. anoxaemia (NASA SP-7, 1965) = hypoxaemia.
What Scott and Irwin were looking for were coarse-grained crystalline rocks called anorthosites which had cooled slowly at depth not long after the Moon had formed.
The lunar highlands rocks are composed of three suites: the ferroan anorthosite suite, the magnesian suite, and the alkali suite (some consider the alkali suite to be a subset of the mg-suite).
The Anorthosites that are common in the Lunar Highlands are not common on the surface of the Earth (The Adirondack Mountains and the Canadian Shield are exceptions).
In the giant impact model, a rock type called ferroan anorthosite (FAN) represents the oldest suite of crustal rocks, ...
We now know that the highlands are made of rocks called anorthosite and polymict breccia.
plagioclase feldspar, olivine, pyroxene, anorthosite
The article does a good job of describing how the presence and/or absence of certain on the moon led to what is now considered by many scientists as the correct theory of its formation.
Anorthosites, which were collected mainly from the highland regions. These are also seen on the Earth (in the old mountain ranges like the Adirondacks) and are a mix of aluminum, calcium, and silicates.
The term is usually applied to a common type of rock collected on the Apollo 16 mission that consists of anorthosite (light color) and mafic (dark, Fe rich) crystallized impact melt in a mutually intrusive textural relationship.
" They also deployed an elaborate package of scientific instruments and collected about 91 kg (about 200 lb) of rocks, including what was believed to be a sample of anorthosite, a crystalline piece of the original lunar crust, about 4.
 See also: Moon, Earth, Rock, Solar, Time
  
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