Anorthosite
Anorthosite , noun
[French anorthose triclinic feldspar (from Greek 'an priv. + 'orqo`s straight) + -ite.]
(Petrol.) A granular igneous rock composed almost exclusively of a soda-lime feldspar, usually labradorite.
Anorthosite , noun
[French anorthose triclinic feldspar (from Greek 'an priv. + 'orqo`s straight) + -ite.]