| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024py•rox•ene (pī rok′sēn, pə-, pī′rok sēn′),USA pronunciation n. - Mineralogyany of a very common group of minerals of many varieties, silicates of magnesium, iron, calcium, and other elements, occurring as important constituents of many kinds of rocks, esp. basic igneous rocks. Cf. augite, diopside, hypersthene.
- French; see pyro-, xeno-; origin, originally supposed to be a foreign substance when found in igneous rocks
- 1790–1800;
Collins Concise English Dictionary © HarperCollins Publishers:: pyroxene /paɪˈrɒksiːn/ n - any of a group of silicate minerals having the general formula ABSi2O6, where A is usually calcium, sodium, magnesium, or iron, and B is usually magnesium, iron, chromium, manganese, or aluminium. Pyroxenes occur in basic igneous rocks and some metamorphic rocks, and have colours ranging from white to dark green or black. They may be monoclinic (clinopyroxenes) or orthorhombic (orthopyroxenes) in crystal structure. Examples are augite (the most important pyroxene), diopside, enstatite, hypersthene, and jadeite
Etymology: 19th Century: pyro- + -xene from Greek xenos foreign, because it was mistakenly thought to have originated elsewhere when found in igneous rocks |