hypersthene

[ hahy-pers-theen ]

noun

, Mineralogy.

1. a dark iron magnesium silicate, an orthorhombic pyroxene containing more than 14 percent ferrous oxide.

hypersthene

/ ˌhaɪpəˈsθɛnɪk; ˈhaɪpəˌsθiːn /

noun

1. a green, brown, or black pyroxene mineral consisting of magnesium iron silicate in orthorhombic crystalline form. Formula: (Mg,Fe) 2 Si 2 O 6

Derived Forms

• hypersthenic, adjective

Other Words From

• hy·per·sthen·ic [hahy-pers-, then, -ik], adjective

Word History and Origins

Origin of hypersthene¹

1800–10; hyper- + Greek sthénos strength, might; replacing hyperstene < French hyperstène

Word History and Origins

Origin of hypersthene¹

C19: from hyper- + Greek sthenos strength

Example Sentences

An eruptive rock allied to trachyte, consisting essentially of a triclinic feldspar, with pyroxene, hornblende, or hypersthene.

From Project Gutenberg

Schiller, shil′ėr, n. the peculiar bronze-like lustre observed in certain minerals, as hypersthene, &c., due to internal reflection.—ns.

From Project Gutenberg

Hypersthene, hī-per-sthēn′, n. a rock-forming mineral which crystallises in orthorhombic forms, an anhydrous magnesian silicate, generally dark green or raven-black in colour.—adj.

From Project Gutenberg

Green augite and hypersthene form a considerable part of these rocks, they may contain also biotite, hornblende and quartz.

From Project Gutenberg

Hypersthene and scapolite both may occur in these rocks and they are sometimes garnetiferous.

From Project Gutenberg