- glaucophane
-
A mixed aluminate of sodium, magnesium and aluminium that has a characteristic blue colour, and exhibits pleochroism, with the chemical formula Na(Mg,Fe)AlSiO(OH).
Wikipedia foundation.
glaucophane
Look at other dictionaries:
Glaucophane — is a mineral belonging to the amphibole group, chemical formula Na2(Mg,Fe)3Al2Si8O22(OH)2. It is named from its typical blue color (in Greek, glaucophane means blue appearing ). Glaucophane crystallizes in the monoclinic system.The blue color is… … Wikipedia
Glaucophane — Glaucophane[1] Catégorie IX : silicates[2] … Wikipédia en Français
Glaucophane — Glau co*phane, n. [Gr. glayko s silvery, gray + fai nesqai to appear.] (Min.) A mineral of a dark bluish color, related to amphibole. It is characteristic of certain crystalline rocks. [1913 Webster] … The Collaborative International Dictionary of English
glaucophane — ● glaucophane nom féminin Silicate naturel d aluminium, de fer, de magnésium et de sodium, du groupe des amphiboles, que l on trouve dans les roches métamorphiques de haute pression … Encyclopédie Universelle
glaucophane — /glaw keuh fayn /, n. a sodium rich monoclinic mineral of the amphibole family, usually metamorphic. [1840 50; GLAUCO + PHANE] * * * ▪ mineral common amphibole mineral, a sodium, magnesium, and aluminum silicate that occurs only in… … Universalium
glaucophane schist facies — One of the major divisions of the mineral facies classification of metamorphic rocks, encompassing rocks whose peculiar mineralogy suggests that they formed under conditions of high pressure and relatively low temperature (generally less than… … Universalium
glaucophane facies — ▪ geology one of the major divisions of the mineral facies classification of metamorphic rocks, the rocks of which, because of their peculiar mineralogy, suggest formation conditions of high pressure and relatively low temperature; such… … Universalium
glaucophane — glau·co·phane … English syllables
glaucophane — ˈglȯkəˌfān noun ( s) Etymology: German glaukophan, from glauk glauc + phan phane : a mineral Na2(Mg,Fe)3Al2Si8O22(OH)2 consisting of a blue, bluish black, or grayish silicate of sodium, aluminum, iron, and magnesium occurring in certain… … Useful english dictionary
metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… … Universalium
