Tachylyte
- Tachylyte
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Le tachylyte est principalement composé de basaltes et de roches volcaniques vitreuses.
Le tachylyte est produit suite au refroidissement rapide de la lave basaltique, par exemple, au fond de l'océan à la suite de l'activité volcanique. Le tachylyte peut également se produire et en traversant le magma de basalte en contact avec les roches environnantes. La pigmentation du tachylyte produit surtout des couleurs « papier glacé » noires, brunes ou vertes. En outre, le verre volcanique peut contenir des minéraux.
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Tachylyte — Tach y*lyte, n. [Gr. tachy s quick + ? to dissolve.] (Min.) A vitreous form of basalt; so called because decomposable by acids and readily fusible. [1913 Webster] … The Collaborative International Dictionary of English
tachylyte — or tachylite [tak′ə līt΄] n. [Ger tachylit < Gr tachys, swift (see TACHY ) + lytos, soluble < lyein, to dissolve (see LYSIS): from its rapid decomposition in acids] a kind of dark colored, basaltic volcanic glass tachylytic [tak′əlit′ik]… … English World dictionary
tachylyte — tachylitic /tak euh lit ik/, adj. /tak euh luyt /, n. Petrog. a black, glassy form of basalt, readily fusible and of a high luster. Also, tachylite. [1865 70; TACHY + LYTE2] * * * ▪ rock also spelled tachylite glassy igneous rocks low in… … Universalium
tachylyte — noun A black, vitreous basalt of volcanic origin … Wiktionary
tachylyte — tachy·lyte … English syllables
tachylyte — /ˈtækəlaɪt/ (say takuhluyt) noun a black, glassy form of basalt, readily fusible and of a high lustre. Also, tachylite. {German Tachylit, from Greek tachy tachy + lytos soluble} –tachylytic /tækəˈlɪtɪk/ (say takuh litik), adjective …
tachylyte — … Useful english dictionary
tach|y|lyt|ic — «TAK uh LIHT ihk», adjective. 1. composed of tachylyte. 2. resembling tachylyte. 3. containing tachylyte … Useful english dictionary
Volcanic glass — A sand grain of volcanic glass under the petrographic microscope. Its amorphous nature makes it go extinct in cross polarized light (bottom frame). Scale box in millimeters. Volcanic glass is the amorphous (uncrystallized) product of rapidly… … Wikipedia
Mafic — is an adjective describing a silicate mineral or rock that is rich in magnesium and iron; the term is a portmanteau of the words magnesium and ferric .[1] Most mafic minerals are dark in color and the relative density is greater than 3. Common… … Wikipedia
Tachylite
