hedenbergite

American  

[hed-n-ber-gahyt] / ˈhɛd n bərˌgaɪt /

noun

1. a contact metamorphic mineral of the pyroxene family, calcium ferrous silicate, CaFe(SiO3 ) 2 , that forms black prismatic crystals in crystalline limestone.

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Etymology

Origin of hedenbergite

1815–25; named after L. Hedenberg, early 19th-century Swedish chemist; -ite ¹

Example Sentences

The specific gravity and optical constants also vary with the chemical composition; the sp. gr. of diopside is 3.2, increasing to 3.6 in hedenbergite, and the angle of optical extinction in the plane of symmetry varies between 38� and 47� in the two extremes of the series.

From Project Gutenberg