hypersthene

American  

[hahy-pers-theen] / ˈhaɪ pərsˌθin /

noun

Mineralogy.

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

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hypersthene British  

/ 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

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Other Word Forms

• hypersthenic adjective

Etymology

Origin of hypersthene

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

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