multiple pyroxene generally of a black or dark green shade occurring in igneous stones such basalt in addition utilized rather than the general term pyroxene
- dark-green to black glassy mineral associated with pyroxene group containing huge amounts of aluminum and iron and magnesium
- A variety of pyroxene, often of a black or dark-green shade, happening in igneous stones, such basalt; -- additionally made use of as an alternative associated with basic term pyroxene.
(n.) A variety of pyroxene, often of a black or dark-green color, occurring in igneous rocks, such as for instance basalt; -- additionally made use of as opposed to the basic term pyroxene.
Chlorite arises from biotite, augite and hornblende.