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

These feldsparites sometimes form mountain masses almost without any admixture of other minerals; but at other times they include augite, which passes into hypersthene.

From The Student's Elements of Geology by Lyell, Charles, Sir

Bronzite is sometimes cut and polished, usually in convex forms, for small ornamental objects, but its use for this purpose is less extensive than that of hypersthene.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

These diabases, as they will be called generically, are usually composed of plagioclase feldspar, and diallage or augite; additional and rarer minerals are quartz, olivine, hypersthene, magnetite, ilmenite, and hornblende.

From History and Comprehensive Description of Loudoun County, Virginia by Head, James William

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

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

Schillerstein, or schiller spar is a similar product of the allied but rhombic mineral hypersthene.

From The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde by Various