Uralite

uralite

[′yu̇r·ə‚līt] (mineralogy) A green variety of secondary amphibole; it is usuallyy fibrous or acicular and is formed by alteration of pyroxene.

Uralite

a pseudomorph of amphibole after pyroxene in magmatic rocks. The name of the pseudomorph derives from the Ural Region. Originally, the name was used for amphibole crystals having a pyroxene habit; later, it was applied to the fibrous aggregates produced upon the replacement of monoclinic pyroxenes by a blue-green amphibole. The mineralogical nature of this amphibole cannot be precisely determined by ordinary microscopic examination; usually it is actinolite, but in some cases it is hornblende containing as much as 5–6 percent Al₂O₃. Upon the uralitization of pyroxenes, the plagioclase either retains its luster or undergoes albitization. Uralitization is caused by the action of residual hydrothermal solutions; it is sometimes linked to subsequent metamorphism.

单词	uralite
释义	uralite uralite (ˈjʊərəˌlaɪt) n (Minerals) an amphibole mineral, similar to hornblende, that replaces pyroxene in some igneous and metamorphic rocks[C19: from the Ural Mountains where it was first found + -ite¹] uralitic adj Uralite uralite [′yu̇r·ə‚līt] (mineralogy) A green variety of secondary amphibole; it is usuallyy fibrous or acicular and is formed by alteration of pyroxene. Uralite a pseudomorph of amphibole after pyroxene in magmatic rocks. The name of the pseudomorph derives from the Ural Region. Originally, the name was used for amphibole crystals having a pyroxene habit; later, it was applied to the fibrous aggregates produced upon the replacement of monoclinic pyroxenes by a blue-green amphibole. The mineralogical nature of this amphibole cannot be precisely determined by ordinary microscopic examination; usually it is actinolite, but in some cases it is hornblende containing as much as 5–6 percent Al₂O₃. Upon the uralitization of pyroxenes, the plagioclase either retains its luster or undergoes albitization. Uralitization is caused by the action of residual hydrothermal solutions; it is sometimes linked to subsequent metamorphism. ThesaurusSeeactinolite
随便看	process application module process appraisal information system process architecture design technology process, architecture & information management process architecture lab process area process assessment process automation process automation configuration tool process, automation, control and optimization process automation system process balance area process-based composite system process based security process bill register process biology process bound process-bound program process(business) process camera process capability process capability database process capability index process centered environment process challenge device