更多melanite例句

1. Biotite occurs in some of these rocks, and melanite also is present.
2. Melanite is found in some of the lavas, as in the leucite-syenites.
3. Their pyroxene is principally aegirine or aegirine augite; some of them are rich in melanite.
4. The dark matrix consists of biotite, aegirine-augite and melanite.