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单词 pegmatite
释义

pegmatite /'pegmətaɪt//'pɛgmə,taɪt/

英汉-汉英词典
n. 结晶花岗岩
词组 | 习惯用语
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  • legitimate adj. 合情合理的; 合法的
  • pragmatic adj. 务实的;实事求是的;注重实效的 实用主义的,实用主义观点的
  • penultimate adj. 倒数第二的
  • pragmatist n. 实用主义者
  • phlegmatic adj. 冷静的,镇定的;迟钝的,冷漠的
pegmatite n. 伟晶岩;结晶花岗岩
granite pegmatite 花岗伟晶岩
migmatic pegmatite 释义混合伟晶岩
pegmatite mineral 伟晶岩矿物
pegmatite deposit 伟晶岩矿床

网络短语:
Garnet intensely albitization mesograin pegmatite 含石榴子石强烈钠长石化中粒伟晶岩
canadite pegmatite 钠霞正长伟晶岩
pegmatite phase 伟晶岩阶段
norite pegmatite 苏长伟晶岩
zonal pegmatite 带状伟晶岩
wollastonite pegmatite 硅灰伟晶岩
magnetite pegmatite 磁铁伟晶岩
英语例句库
  1. Beside fractional crystallization model,liquid immiscibility of Fluorine-rich granite magma is an important mechanism to form pegmatite and pegmatite type deposit.
    除了结晶分异模式外,富氟花岗岩浆液态不混溶作用也是伟晶岩成岩成矿的重要机制。
  2. The types of deposits basically are differential metasomatism in the later magma, pneumatolytic hydrothermal process, pegmatite process, residual deposits and placer deposits.
    矿床类型以岩浆晚期分异交代型、气成热液型、伟晶岩型、风化壳型和砂矿型为主。

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中文百科

伟晶岩

含有蓝色刚玉晶体的伟晶岩

伟晶岩因为其经常含有大粒晶体而得名,具有粗粒或巨粒结构,粒径通常超过50毫米,晶体最大可以达到数米甚至十米以上长,一般颜色较浅,是一种浅成岩,但常产于深成岩的体内或周围,其包含的晶体经常是有价值的矿物,对于其产生的原因,有多种解释,有的理论认为是由于火山残余的溶浆缓慢结晶而成,也有认为是由于高压造成的强烈扩散条件影响,目前尚没有一致公认的理论。

根据其成分不同,伟晶岩可以分为:

英语百科

Pegmatite 伟晶岩

Proterozoic pegmatite swarm in the headwall of the cirque of a small mountain glacier, northeastern Baffin Island, Nunavut.
Pegmatite with blue corundum crystals
Pegmatite containing lepidolite, tourmaline, and quartz from the White Elephant Mine in the Black Hills, South Dakota
Pegmatitic granite, Rock Creek Canyon, eastern Sierra Nevada, California. Note pink potassium feldspars and cumulate-filled chamber.

A pegmatite is a holocrystalline, intrusive igneous rock composed of interlocking phaneritic crystals usually larger than 2.5 cm in size (1 inch); such rocks are referred to as pegmatitic.

Most pegmatites are composed of quartz, feldspar and mica, having a similar basic composition as granite. Rarer intermediate composition and mafic pegmatites containing amphibole, Ca-plagioclase feldspar, pyroxene, feldspathoids and other unusual minerals are known, found in recrystallised zones and apophyses associated with large layered intrusions.

近义、反义、联想词
近义词
n.
igneous rock

联想词
mineral矿物;sedimentary沉积的;limestone石灰岩;meteorite陨星;ore矿石;quarry采石场;geological地质的;quartz石英;geologic地质的;sandstone砂岩;crystals晶体;
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更新时间:2025/6/17 10:31:57