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pyroxene

n. அழற்பாறையிற் காணப்பெறும் படிக்ககிவகை, சுண்ணப் படிக்ககி, வௌ஢ளிமப் படிக்ககி, அழற்பாறைக் கனிம வகை.


Pyr"ox*ene, n. Etym: [F. pyroxène, from Gr. (Min.) Defn: A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90º, and also in massive forms which are often laminated. It varies in color from white to dark green and black, and includes many varieties differing in color and composition, as diopside, malacolite, salite, coccolite, augite, etc. They are all silicates of lime and magnesia with sometimes alumina and iron. Pyroxene is an essential constituent of many rocks, especially basic igneous rocks, as basalt, gabbro, etc. Note: The pyroxene group contains pyroxene proper, also the related orthorhombic species, enstatite, bronzite, hypersthene, and various monoclinic and triclinic species, as rhodonite, etc.


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