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Phenocryst definition

Web1. júl 2000 · Olivine phenocryst compositions and whole-rock chemical compositions are used to identify primitive picrite basalts from widely separated parts of the Deccan flood basalt province. Overall, primitive picrites constitute a significant volume of rocks within the province. Most were probably emplaced along deep faults in the Cambay graben and ... Web6. aug 2015 · The phenocryst was albitized. The matrix around the plagioclase phenocryst consists of clinopyroxene, hornblende and plagioclase. Some clinopyroxene and hornblende were altered to chlorite. Many ...

phenocrystal - Wiktionary

Webphenocrystic. (ˌfiːnəˈkrɪstɪk ) adjective. relating to a phenocryst. Collins English Dictionary. Copyright © HarperCollins Publishers. Webphenocryst noun phe· no· cryst ˈfē-nə-ˌkrist : one of the prominent embedded crystals of a porphyry phenocrystic ˌfē-nə-ˈkri-stik adjective Example Sentences Recent Examples on … radvan uni bonn https://campbellsage.com

Phenocryst - chemeurope.com

Webphenocryst noun any relatively large crystal embedded in a more fine-grained or glassy igneous rock Freebase (0.00 / 0 votes) Rate this definition: Phenocryst A phenocryst is a relatively large and usually conspicuous crystal distinctly larger than the grains of the rock groundmass of a porphyritic igneous rock. WebMegacryst. In geology, a megacryst is a crystal or grain that is considerably larger than the encircling matrix. They are found in igneous and metamorphic rocks. [1] Megacrysts can be further classified based on the nature of their origin, either as: [2] Phenocrysts, which crystallize in molten rock material ( lava or magma) and are hence an ... Webphenocryst n any of several large crystals that are embedded in a mass of smaller crystals in igneous rocks such as porphyry (C19: from pheno- (shining) + crystal) drama\u0027s uy

Phenocryst definition and meaning Collins English …

Category:Olivine Compositions in Picrite Basalts and the Deccan Volcanic …

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Phenocryst definition

phyric: meaning - WordSense

Web28. sep 2024 · phenocrystal ( plural phenocrystals ) Synonym of phenocryst quotations . WebDefinition: A phenocryst is visible large crystal embedded within a fine-grained matrix of smaller crystals. This combination of matrix and phenocrysts forms a porphyritic rock …

Phenocryst definition

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WebPhenocrysts synonyms, Phenocrysts pronunciation, Phenocrysts translation, English dictionary definition of Phenocrysts. n. A conspicuous, usually large, crystal embedded in porphyritic igneous rock. phe′no·crys′tic adj. American Heritage® Dictionary of …

Web13. apr 2011 · OLIVINE PHENOCRYST GROWTH. When an olivine phenocryst grows and remains in a stationary position in a magma the concentration of its components begins to decrease around the phenocryst. After a small phenocryst reaches a certain size it exceeds the yield stress of the magma and begins to settle (Murase & McBirney, 1973). During … WebPhenocryst – Crystal larger than the rock grains that surround it in an igneous rock Volcanic gas – Gases given off by active volcanoes References [ edit] ^ Grapes, Rodney H. (2011). Pyrometamorphism (2nd ed.). Berlin, Germany: Springer Verlag. p. 115. ISBN 978-3-642-15587-1. This volcanology article is a stub.

WebDefine phenocrystic. phenocrystic synonyms, phenocrystic pronunciation, phenocrystic translation, English dictionary definition of phenocrystic. n. A conspicuous, usually large, crystal embedded in porphyritic igneous rock. phe′no·crys′tic adj. American Heritage® Dictionary of the English Language,... Webphenocryst. A large crystal within an igneous rock. These can be seen within phaneritic and porphyritic rocks.

WebA phenocryst is a relatively large and usually conspicuous crystal distinctly larger than the grains of the rock groundmass of a porphyritic igneous rock. Phenocrysts often have euhedral forms either due to early growth within a magma or by post-emplacement recrystallization.

WebPorphyritic is an adjective used in geology to describe igneous rocks with a distinct difference in the size of mineral crystals, with the larger crystals known as … drama\u0027s utWebThe definition of phenocrystin the dictionaryis any of several large crystals that are embedded in a mass of smaller crystals in igneous rocks such as porphyry. WORDS THAT … drama\u0027s urWebA phenocrystis a relatively large and usually conspicuous crystal distinctly larger than the grains of the rock groundmass of an igneous rock. From Wikipedia This example is from … radvax rccWebphenocryst (ˈfiːnəˌkrɪst; ˈfɛn-) n (Geological Science) any of several large crystals that are embedded in a mass of smaller crystals in igneous rocks such as porphyry [C19: from … radvanska 1Webphenocryst in British English. (ˈfiːnəˌkrɪst , ˈfɛn- ) noun. any of several large crystals that are embedded in a mass of smaller crystals in igneous rocks such as porphyry. Collins … drama\u0027s uuWebPorphyritic is an adjective used in geology to describe igneous rocks with a distinct difference in the size of mineral crystals, with the larger crystals known as phenocrysts. Both extrusive and intrusive rocks can be porphyritic, meaning all types of igneous rocks can display some degree of porphyritic texture. radvazWebExamples. Automatically generated practical examples in English: Categorizing a rock as aphyric or as sparsely phyric is often a question of whether a significant number of crystals exceed the minimum size. Phenocryst - Wikipedia. At least three different types of lava compositions exist in the Chukotat Group, including olivine phyric, pyroxene-phyric and … drama\u0027s uw