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.

---

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

---

Other Word Forms

• hypersthenic adjective

Etymology

Origin of hypersthene

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

Example Sentences

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

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

Thus magnetite, apatite and picotite, with olivine, may be enclosed in augite, hornblende, and hypersthene, sometimes with a later growth of biotite, while the felspars occupy the interspaces between the clusters of ferromagnesian minerals.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" by Various

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

Some contain biotite, others augite or hypersthene; many have a small amount of quartz.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" by Various