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Poikilitic

WebDownload scientific diagram Poikilitic and contamination textures in carbonatites (a-c falsecolor BSE images, SB 50 μm; d-f BSE images, SB 0.5 mm). a Dolomite oikocryst containing inclusions of ... WebFeb 24, 2024 · Northwest Africa (NWA) 6342 is an intermediate, poikilitic shergottite, found in Algeria in 2010. It is comprised of two distinct petrographic areas; poikilitic domains with rounded Mg-rich olivine chadacrysts enclosed by large low-Ca pyroxene oikocrysts, and a nonpoikilitic domain mainly comprised of subhedral olivine and …

Poikilitic Definition & Meaning Dictionary.com

WebOphitic texture, a variant the poikilitic texture, is one where random plagioclase laths are enclosed by pyroxene or olivine. If plagioclase is larger and encloses the ferromagnesian minerals, then the texture is subophitic and the laths typically impinge on one another to form sharp angles. Note that the change from intergranular through ... WebPoikilitic eudialyte outcrops in a strongly peralkaline phonolithic cumulo-dome in Jabal Al Hasawinah, Libya. Textural relationships reveal that the eudialyte has formed at a very late stage of the rock petrogenesis. Electron microprobe analyses confirm its volatile (hydrous) nature and low REE content. lightning mcqueen and the magic highway https://tywrites.com

Poikilitic Definition & Meaning - Merriam-Webster

WebThe poikilitic lithology is defined by equant, rounded olivine and chromite chadacrysts contained within, and completely surrounded by mm-size pigeonite oikocrysts with thick, irregular rims of augite (up to 9 mm; Fig. 1). The olivines (150–600 μm across) are dispersed within the oikocrysts and are not in contact with each other. Webpoikilitic texture, and equigranular versus porphyritic textures in terms of material properties and physical conditions through the number density of crystals. In Appendices A-C, the detailed derivations of the equa- tions for moments of crystal size distribution function and of scaling relation for number density are presented. WebIn analogy to lunar poikilitic rocks and lithic fragments, poikilitic lithic fragments in LL‐group chondrites, i.e., meteorites which are highly brecciated due to repeated … peanut butter lollipops for dogs

Poikilitic texture - Wikipedia

Category:Porphyritic vs Poikilitic - What

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Poikilitic

Porphyritic vs Poikilitic - What

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Poikilitic

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WebLarger scale features, such as fractures and layering, are considered rock structures in comparison. There are nine main types of igneous rock textures: Phaneritic, vesicular, … WebJan 24, 2024 · Poikilitic crystals in orthocumulate are conventionally thought to crystallize from the trapped liquid within a crystal mush, whereas unzoned oikocrysts in heteradcumulate, a rock composed entirely of oikocrysts and chadacrysts with little or no trapped liquid, are formed by growth of rare crystal nuclei in the interstitial liquid that is …

WebJul 29, 2016 · Poikilitic and granular textured harzburgites are intimately intermingled, in some cases on a centimetre scale in the same rock ( Fig. 4 g). Normally zoned … Webpoikilitic Applied to the texture produced when several orientated or unorientated crystals are enclosed within a larger crystal in an igneous rock. The larger crystals have more …

WebJul 5, 2024 · Poikilitic orthopyroxene grains in the basal parts of both N-II and G-I suggest entrainment and partial resorption of plagioclase grains from the semi-crystalline resident … WebPoikilitic Texture Poikilitic texture refers to crystals, typically phenocrysts, in an igneous rock which contain small grains of other minerals. In igneous rocks poikilitic texture is …

Poikilitic texture refers to igneous rocks where large later-formed less perfect crystals ('oikocrysts') surround smaller early-formed idiomorphic crystals ('chadacrysts') of other minerals. A poikilitic texture is most easily observed in petrographic thin sections. In some rocks there seems to be little … See more A variety of poikilitic texture, known as ophitic texture, is where laths of plagioclase are enclosed in pyroxene, olivine or other minerals. It is very characteristic of many diabases, in which large crystals of See more • List of rock textures • Poikiloblast See more

WebNorthwest Africa (NWA) 6342 is an intermediate, poikilitic shergottite, found in Algeria in 2010. It is comprised of two distinct petrographic areas; poikilitic domains with rounded Mg-rich olivine chadacrysts enclosed by large low-Ca pyroxene oikocrysts, and a nonpoikilitic domain mainly comprised of subhedral olivine and vesicular recrystallized plagioclase. lightning mcqueen and mater cars landWebMar 8, 2024 · The poikilitic gabbro groundmass is composed of coarse-grained (ca. 3 mm) reversely-zoned subhedral plagioclase (An 71−68 core to An 81−79 rim) (Figures 2B, 7A) and anhedral olivine (Fo 84−83). lightning mcqueen barbie and cawWebDefinition of poikilitic in the Definitions.net dictionary. Meaning of poikilitic. What does poikilitic mean? Information and translations of poikilitic in the most comprehensive … peanut butter lovers gift boxWebPoikilitic is a related term of poikiloblastic. In geology lang=en terms the difference between poikilitic and poikiloblastic is that poikilitic is (geology) describing the texture of an … peanut butter looks like its breathingWebAug 1, 1998 · Poikilitic orthopyroxene grains in the basal parts of both N-II and G-I suggest entrainment and partial resorption of plagioclase grains from the semi-crystalline resident material into which the fresh magma was intruded. This content is PDF only. Please click on the PDF icon to access. lightning mcqueen ausmalenWebPoikiloblastic definition, (of metamorphic rocks) having small grains of one mineral embedded in metacrysts of another mineral. See more. lightning mcqueen and tow mater flyingWebJan 24, 2024 · The poikilitic harzburgites are interlayered with cumulate pyroxenites in which orthopyroxene grains show a variety of zoning patterns: Cr-rich cores similar to those in the oikocrysts; sharply ... lightning mcqueen ball pit