augitite
noun
au·gi·tite
ˈȯjətˌīt,
-gə-,
-əˌtīt
plural -s
: an extrusive porphyritic rock consisting essentially of augite with small amounts of amphibole magnetite or ilmenite and apatite in a glassy groundmass
Word History
Etymology
International Scientific Vocabulary augite + -ite; probably originally formed as German augitit