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hypersthene
hy·per·sthene H5383000 (hī′pər-sthēn′)n. A green, brown, or black splintery, cleavable pyroxene mineral, essentially (Fe,Mg)2Si2O6. [French hypersthène : hyper-, extreme (from Greek huper-; see hyper-) + Greek sthenos, strength; see segh- in Indo-European roots.] hy′per·sthen′ic (-thĕn′ĭk) adj.hypersthene (ˈhaɪpəˌsθiːn) n (Minerals) a green, brown, or black pyroxene mineral consisting of magnesium iron silicate in orthorhombic crystalline form. Formula: (Mg,Fe)2Si2O6[C19: from hyper- + Greek sthenos strength] hypersthenic adjhy•per•sthene (ˈhaɪ pərsˌθin) n. a mineral of the pyroxene group, magnesium-iron silicate, (Mg, Fe)SiO3. [1800–10; hyper- + Greek sthénos strength, might] hy`per•sthen′ic (-ˈθɛn ɪk) adj. hypersthene
hypersthene[′hī·pər‚sthēn] (mineralogy) (Mg,Fe)SiO3 A grayish, greenish, black, or dark-brown rock-forming mineral of the orthopyroxene group, with bronzelike luster on the cleavage surface. |