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 Webster's Unabridged Dictionary by Webster, Noah

Sometimes the pyroxenic mineral becomes hypersthene, giving rise to hypersthene-gabbro; or when hornblende is present, to hornblende-gabbro; when olivine, to olivine-gabbro.

From Volcanoes: Past and Present by Hull, Edward

The following minerals produce beads with a small quantity of soda, but with the addition of more produce slags: tabular spar, diallage, hypersthene, epidote, zoisite.

From A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations by Anonymous

Bronzite and hypersthene were known long before enstatite, which was first described by G.A.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" by Various

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