2024 Phenocryst definition

Phenocryst definition

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Web(A porphyry is an igneous rock containing conspicuous crystals, called phenocrysts, surrounded by a matrix of finer-grained minerals or glass or both.) In most rocks, both … Webphaneritic. [ făn′ə-rĭt ′ĭk ] Of or relating to an igneous rock in which the crystals are so coarse that individual minerals can be distinguished with the naked eye. Phaneritic rocks are …

phenocryst definition English definition dictionary Reverso

WebAmygdules or amygdales ( / əˈmɪɡdjuːlz, - deɪlz /) form when the vesicles (pores from gas bubbles in lava) of a volcanic rock or other extrusive igneous rock are infilled with a secondary mineral, such as calcite, quartz, chlorite, or one of the zeolites. [1] Webmicro-+‎ phenocryst. Noun . microphenocryst (plural microphenocrysts) A very small crystal in a fine-grained porphyritic rock. 1983, U.S. Geological Survey Bulletin (page 9) The basalt of Goose Island of the Ice Harbor Member is unique for the occurrence of microphenocrysts of ilmenite and titanmagnetite. bread in a slow cooker

Xenocryst geology Britannica

WebNov 11, 2013 · phenocryst a larger, easily visible crystal in an otherwise fine-grained igneous rock. phyllite regional metamorphic rock similar to slate except that the foliation surfaces are shinier and more wrinkled. Forms at slightly higher metamorphic grade (higher temperature) than slate. phyllitic foliation WebPhenocryst a large crystal set in a fine matrix Poikilitic The state if a host phenocryst (oikocryst) containing many inclusions of other minerals Oikocryst A host phenocryst in poikilitic texture Groundmass (matrix, mesostasis) The glassy or finer-grained element in the porphyritic texture Seriate having a continuous graduation in size Aphyric WebAs nouns the difference between xenolith and phenocryst is that xenolith is any piece of rock having a different origin to that of the igneous rock in which it is found while phenocryst is any relatively large crystal embedded in a more fine-grained or glassy igneous rock. coschedule essential referral explained

Phenocryst definition

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http://science.marshall.edu/elshazly/Igmet/variation.doc WebSep 28, 2024 · phenocrystal - Wiktionary phenocrystal English [ edit] Noun [ edit] phenocrystal ( plural phenocrystals ) Synonym of phenocryst quotations Anagrams [ edit] …

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WebOur current knowledge of the genesis, ascent, storage, and eruption of mafic magmas is intimately linked with olivine, its primary crystal cargo. Recent claims that phenocryst-size crystals can grow rapidly and non-concentrically are challenging our perception of what olivine zoning represents (e.g., controlled by growth and/or diffusion), and whether … Webphenocryst. [ fē ′nə-krĭst′ ] A large crystal that is surrounded by a finer-grained matrix in an igneous rock. Phenocrysts are usually the first crystals to form from a cooling magma, …

WebPhenocryst percent: a: Aphyric <1%: sp: Sparsely phyric: 1%-2%: mp: Moderately phyric: 2%-10%: hp: Highly phyric >10%: Groundmass crystallinity: c: Holocrystalline ... Webdisplay a phenocryst assemblage of clinopyroxene + albitised plagioclase + ilmenite and rare amphibole. Accessory. apatite-needles in the Gendarme Dolerites, however, enable. distinction between the two. Characteristic primary mineral. assemblages of the intrusives of the Cobb Igneous Complex

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 … WebA phenocryst is a relatively large and usually conspicuous crystal distinctly larger than the grains of the rock groundmass of an igneous rock. Such rocks that have a distinct …

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 …

Webphenocryst / ˈfiːnəˌkrɪst ˈfɛn-/ n. any of several large crystals that are embedded in a mass of smaller crystals in igneous rocks such as porphyry; Etymology: 19 th Century: from pheno … bread in a tin canWebphenocryst 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 English … bread in a tubeWeblatite, also called trachyandesite, extrusive igneous rock very abundant in western North America. Usually coloured white, yellowish, pinkish, or gray, it is the volcanic equivalent of monzonite (q.v.). Latites contain plagioclase feldspar (andesine or oligoclase) as large, single crystals (phenocrysts) in a fine-grained matrix of orthoclase feldspar and augite. … coschedule phone numberWebA phenocryst is a relatively large and usually conspicuous crystal distinctly larger than the grains of the rock groundmass of an igneous rock. Such rocks that have a distinct difference in the size of the crystals are called porphyries, and the adjective porphyritic is … coschedule marketing strategyWebNoun [ edit] phenocryst ( plural phenocrysts ) ( mineralogy) Any relatively large crystal embedded in a more fine-grained or glassy igneous rock quotations Synonyms [ edit] phenocrystal Derived terms [ edit] phenocrystic Translations [ edit] ± show Any relatively large crystal embedded in a more fine-grained or glassy igneous rock Categories: coschedule plansWebphenocryst (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 … bread in bag clip artWebIddingsite forms from the weathering of basalt in the presence of liquid water and can be described as a phenocryst, i.e. it has macroscopically visible crystals in a fine-grained groundmass of a porphyritic rock. bread in a ziplock bag