Origin of pyroxene
Examples from the Web for pyroxene
Historical Examples of pyroxene
There is also a small amount of hematite, pyroxene and sericite.
Pyroxene, quartz and augite form the groundmass, as seen in section.
The lava is black, rich in pyroxene, and strongly attracted by a magnet.
The pyroxene is morphic, yellow or green, and is surrounded by formless areas of nepheline.
Both Great and Little Ararat consist entirely of volcanic rocks, chiefly andesites and pyroxene andesites, with some obsidian.