hypersthene


Also found in: Dictionary, Medical, Wikipedia.

hypersthene

[′hī·pər‚sthēn]
(mineralogy)
(Mg,Fe)SiO3 A grayish, greenish, black, or dark-brown rock-forming mineral of the orthopyroxene group, with bronzelike luster on the cleavage surface.
References in periodicals archive ?
The CIPW norms of the rocks are dominated by sodic plagioclase followed by quartz albite minor hypersthene etc.
However, Proterozoic Pielavesi granulites of central Finland, which are accompanied by hypersthene granitoids, were formed at 800[degrees]C and 5-6 kbar and show evidence for near-isobaric cooling (Holtta 1988).
CIPW norms contain hypersthene (rocks are subalkaline; assuming [Fe.
A hypersthene sample from the Smithsonian was analyzed for Cr and used as a secondary standard.