, which is less dense than many other silicate minerals like olivine or pyroxene.
Anorthite is central to the "Magma Ocean" theory of lunar formation. anorthite
: On Earth, pure anorthite is restricted primarily to basic and ultrabasic igneous rocks like gabbro, picrite, or specialized formations such as the Adirondack Mountains . , which is less dense than many other
Anorthite is characterized by a three-dimensional network structure of SiO4cap S i cap O sub 4 AlO4cap A l cap O sub 4 tetrahedra. : anorthite