pegmatite

简明释义

英[ˈpeɡmətaɪt]美[peɡməˌtaɪt]

n. 伟晶岩；结晶花岗岩

英英释义

单词用法

同义词

反义词

例句

1.The research on geochemical characteristics and isotope age suggests that the deposit belongs to a magma-metasomatic pegmatite type deposit related to Fufang and Huitong granitic mass in genesis.

地球化学和同位素研究表明，该矿床为岩浆一交代花岗伟晶岩型矿床，成因上与付坊和会同岩体有关。

2.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。

3.A great quantity of fluid-melt inclusions was found in early-stage formed fluorite and quartz from aegirine-augite-barite pegmatite vein and carbonatite vein in Mianning REE deposit of Sichuan.

在四川冕宁稀土矿床霓辉重晶伟晶岩和碳酸岩矿体的早期萤石、石英中发现了大量的流体-熔融包裹体。

4.Li- Be-Ta-Nb-bearing deposits in Lianyun Mountain occurred in Shangshi on the south wing of Lianyun Mountain anticline, the densely distributed pegmatite area.

连云山上石含锂铍钽铌矿床位于连云山背斜南翼上石伟晶岩密集区，其地层为板溪群二云母片岩。

5.The mineralized pegmatite dykes are mostly controlled by NEE-striked longitudinal joints and lie in the marginal facies of Mufu mountain rocks mass.

矿化伟晶岩墙大多受NEE向纵向节理控制，并位于幕阜山岩体的边缘。

6.Donghu pegmatite deposit is characterized by granitic and completely differential pegmatite.

东湖伟晶岩矿床为花岗质完全分异式伟晶岩类型；

7.The geologist discovered a large deposit of pegmatite 伟晶岩 in the mountain range.

地质学家在山脉中发现了一大块<pegmatite>伟晶岩的矿藏。

8.Many gemstones, such as tourmaline, can be found in pegmatite 伟晶岩 formations.

许多宝石，如电气石，可以在<pegmatite>伟晶岩地层中找到。

9.The unique crystal structures in pegmatite 伟晶岩 make it a favorite among mineral collectors.

在<pegmatite>伟晶岩中独特的晶体结构使其成为矿物收藏家的最爱。

10.Mining operations often target pegmatite 伟晶岩 for its rich mineral content.

采矿作业通常以<pegmatite>伟晶岩为目标，因为它富含矿物成分。

11.The formation of pegmatite 伟晶岩 is typically associated with the late stages of magma crystallization.

<pegmatite>伟晶岩的形成通常与岩浆结晶的后期阶段有关。

作文

In the field of geology, various types of rocks provide insight into the Earth's history and formation. One such intriguing type of rock is pegmatite, which is known for its unique characteristics and formation processes. Pegmatite (花岗岩脉石) is an igneous rock that crystallizes from magma at a late stage of its cooling process. It is typically found in large, coarse-grained formations that can contain minerals such as quartz, feldspar, and mica, among others. What makes pegmatite particularly fascinating is not just its size but also the presence of rare minerals that are often not found in other types of rocks. The formation of pegmatite occurs when magma rises toward the surface and cools slowly, allowing large crystals to grow. This slow cooling process is essential because it provides the necessary time for the minerals to crystallize into larger sizes. The environment in which pegmatite forms is typically rich in water and other volatiles, which can lead to the creation of exceptional mineral deposits. These conditions often occur in areas where tectonic activity has caused the magma to intrude into existing rock layers, creating pockets where the magma can cool slowly. One of the most notable features of pegmatite is its mineral diversity. While it primarily consists of quartz, feldspar, and mica, it can also contain a variety of rare minerals such as tourmaline, beryl, and lithium-rich minerals. These rare minerals make pegmatite a significant source for gemstones and industrial minerals. For instance, beryl can form beautiful emeralds and aquamarines, while spodumene is a source of lithium, which is essential for modern batteries. Geologists and mineralogists often study pegmatite formations to understand the conditions under which they formed and to explore their economic potential. Mining operations have been established in regions with rich pegmatite deposits, leading to the extraction of valuable minerals. Notable locations for pegmatite mining include the Black Hills of South Dakota and the pegmatite fields of Minas Gerais in Brazil, both of which have yielded stunning specimens that are highly sought after by collectors. Moreover, pegmatite plays a crucial role in the study of geological processes. By examining the mineral composition and structure of pegmatite, scientists can gain insights into the conditions of the Earth's crust during the time of its formation. This information can help reconstruct past geological events and understand the evolution of the Earth's crust over millions of years. In conclusion, pegmatite is more than just a type of rock; it is a window into the geological processes that shape our planet. Its unique formation, mineral diversity, and economic significance make it a topic of interest for both geologists and mineral enthusiasts. Understanding pegmatite not only enhances our knowledge of geological history but also underscores the importance of these natural resources in our modern world.

在地质学领域，各种类型的岩石提供了对地球历史和形成的洞察。其中一种引人入胜的岩石类型是pegmatite，它以其独特的特征和形成过程而闻名。Pegmatite（花岗岩脉石）是一种从岩浆在冷却过程中晚期结晶而成的火成岩。它通常以大型粗粒形成，可能包含石英、长石和云母等矿物。使pegmatite特别迷人的是，不仅是它的大小，还有其他类型岩石中通常找不到的稀有矿物的存在。 Pegmatite的形成发生在岩浆上升到表面并缓慢冷却时，这使得大型晶体得以生长。这个缓慢冷却的过程至关重要，因为它为矿物结晶成更大尺寸提供了必要的时间。Pegmatite形成的环境通常富含水和其他挥发物，这可能导致异常矿物沉积的形成。这些条件通常发生在构造活动导致岩浆侵入现有岩层的地区，从而创造出岩浆可以缓慢冷却的空间。 Pegmatite最显著的特征之一是其矿物多样性。尽管它主要由石英、长石和云母组成，但它也可能包含多种稀有矿物，如电气石、绿柱石和富锂矿物。这些稀有矿物使pegmatite成为宝石和工业矿物的重要来源。例如，绿柱石可以形成美丽的翡翠和海蓝宝石，而铝辉石则是锂的来源，这对于现代电池至关重要。 地质学家和矿物学家经常研究pegmatite形成，以了解它们形成的条件，并探索其经济潜力。在具有丰富pegmatite矿床的地区建立了采矿作业，从而提取出有价值的矿物。著名的pegmatite采矿地点包括南达科他州的黑山和巴西米纳斯吉拉斯的pegmatite田，这两个地方都产生了令人惊叹的标本，受到收藏家的高度追捧。 此外，pegmatite在地质过程研究中扮演着至关重要的角色。通过检查pegmatite的矿物组成和结构，科学家可以深入了解其形成时地壳的条件。这些信息可以帮助重建过去的地质事件，并理解数百万年来地壳的演变。 总之，pegmatite不仅仅是一种岩石；它是通向塑造我们星球的地质过程的窗口。它独特的形成、矿物多样性和经济重要性使其成为地质学家和矿物爱好者感兴趣的话题。理解pegmatite不仅增强了我们对地质历史的知识，也强调了这些自然资源在现代世界中的重要性。