Metapegmatite/-aplite: Prekinematic/premetamorphous rocks composed mainly of feldspar, quartz and mica only ("barren pegmatitic rocks") showing …
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Feldspar intergrown with phosphates and columbite in the Reinhardsrieth tabular pegmatite. Lath-shaped columbite-(Fe) (col) in the phosphate-bearing aplite, replaced by apatite-(Mn) (ap).The central part of the BSE image is made up of K feldspar (kfs) and albite (alb) which are both surrounded by phosphates: eosphorite (eos), whitmoreite (whi), …
The earliest known use of the noun aplite is in the 1860s. OED's earliest evidence for aplite is from 1862, in the writing of J. Beete Jukes, geologist. aplite is a borrowing from Greek, combined with an English element; modelled on a German lexical item.
L' aplite, sœur discrète du granite, trace dans les entrailles de la Terre des réseaux finement ciselés, miroirs de l'ordre caché qui régit notre monde souterrain. Comme un poème en filigrane sur la page robuste de la croûte terrestre, l' aplite compose une symphonie minérale dont chaque note est un cristal microscopique.
Opis. Aplite - v naravi prisoten kot drobnozrnata, svetla granitna skala s sestavnimi deli, ki so očesu nevidni. Aktivirna tipka Aplite Eco se s svojimi lastnostmi izjemno lepo vključuje v raznolika okolja, neslišnost splakovanja pa poudarja njeno zlitje s celoto.
Aplite is a type of igneous rock that is closely related to granite.It is characterized by its fine-grained texture, typically composed of small crystals of quartz and feldspar.Aplite is often considered a variety of granite due to its mineral composition and origin, but it differs from typical granite in terms of grain size and appearance.. Key …
The "ore body" of the pegmatite is described by two items—1st order and 2nd order terms, the type of deposit (e.g. metapegmatite, pegmatoid, pseudopegmatite) and by its shape and structure (e.g., stock-like, tabular, miarolitic). The "ore composition" is defined also by two characteristics, labeled as 3rd order and 4th order terms, by ...
Tong'an aplite dikes are located about 41 km to the northeast of Yifeng County, which intrude into the Shuangqiaoshan Group (Shen, 1984). The Luofang–Shantianqiao NE–SW-trending fracture zones were the main control on the orientations of the aplite dikes, but some small veins run NNE–SSW along a secondary …
The Stewart pegmatite-aplite lies entirely within a 17 km 2 gabbro-tonalite pluton, originally referred to by the generic name San Marcos gabbro (Larsen, 1948). Because the San Marcos name has been applied to most gabbroic rocks in the NPRB, many of which vary greatly in age and lithologic character, we refer to the Pala district pegmatite ...
Aplite is mostly fine grain, white to light gray in color. They are found only in felsic intrusives like granites and granodiorites. Aplites are used in building, road and bridge …
Aplite, any intrusive igneous rock of simple composition, such as granite composed only of alkali feldspar, muscovite mica, and …
A light-coloured fine-grained acid igneous rock with a sugary texture, consisting of quartz and feldspars...。、。
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After a time interval during which the remaining dense, silicate-rich liquid persisted as a supercooled liquid, rapid nucleation at many centers produced aplite. (4) Granular pegmatite crystallized from the mobile, aqueous gas phase, after its accumulation in zones within the denser, supercooled liquid.
Aplite / æplaɪt / in petrology, 석영과 장석이 지배적 인 광물 인 관입 암에 부여 된 이름. Aplites는 일반적으로 매우 세밀하고, 흰색, 회색 또는 분홍빛이며, 구성 요소는 확대경을 사용하여 볼 수 있습니다. aplite의 dykes 그리고 실은 일반적으로 화강암 몸을 횡단하는 ...
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Aplite (Aplite). Aplite (/ æplaɪt /)는 광물 구성이 화강암과 동일하지만 입자가 1mm 미만으로 훨씬 미세한 침입 성 화성암입니다. 석영과 장석이 지배적 인 광물입니다. 'aplite'또는 'aplitic'이라는 용어는 종종 미세 또는 중간 입자의 "sugary"질감을 가진 석영 및 장석의 정맥을 설명하는 조직 용어로 사용됩니다.
Sources for energy, ore and industrial minerals. Harald G. Dill. ) Gottfried Wilhelm Leibniz University, Welfengarten 1 D-30167, Hannover, Germany. Abstract. Pegmatites and aplites are a treasure ...
The hardness of Aplite is 6.5 whereas its compressive strength is 130.00 N/mm 2. Streak is the color of rock when it is crushed or powdered. The streak of Aplite is white whereas its fracture is not available. Luster of Aplite is the interaction of light with the surface of Aplite. Luster of Aplite is dull to pearly to subvitreous.
The zircon age of the first episode of aplite intrusion (219.6 Ma) is indistinguishable from the ages of two-mica granite and muscovite albite granite (217.0–222.5 Ma, Fei et al., 2020; Deschamps et al., 2018), and close to the age of the JA (217.0 ± 0.8 Ma, Dai et al., 2019), suggesting a widespread aplite magmatic event at …
Aplite cutting hybrid diorite and displacing a microxenolith (lower portion of drawing) Ronez, North Jersey. Felspar: fine stipple. Hornblende: coarse stipple and lines indicating cleavage. Mica: ruled. Quartz: blank. On the extreme bottom right-hand edge is a micrographic intergrowth. Size of section 6x6mm. points along the contact the units ...
Aplite (/ˈæplaɪt/) is an intrusive igneous rock in which the mineral composition is the same as granite, but in which the grains are much finer, under 1 mm across. Quartz and feldspar are the dominant minerals. The term aplite or aplitic is often used as a textural term to describe veins of quartz and feldspar with a fine to medium-grain "sugary" texture. …
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Aplite and pegmatite.-Careful field study of the larger and principal granite areas in Georgia, by the writer, indicates the general absence of true aplites therefrom. They have been observed in association with the granite masses only at one locality in the state. Since the border portions of the granite ...
Aplite. Also known as haplite, aplite is an intrusive igneous rock that chiefly consists of quartz and feldspars. Fine-grained and granitic, the material is sometimes utilized in the process of glassmaking. Aplite …
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