pegmatitic

简明释义

英[ˌpɛɡməˈtɪtɪk]美[ˌpɛɡməˈtɪtɪk]

adj. 伟晶岩的

英英释义

单词用法

同义词

反义词

例句

1.The primary beryl crystals were crystallized early from the pegmatitic magma in association with rock forming minerals such as quartz, Muscovite, albite and spodumene.

原生绿柱石形成于早期岩浆阶段，与造岩矿物石英、白云母、钠长石、锂辉石共生。

2.The primary beryl crystals were crystallized early from the pegmatitic magma in association with rock forming minerals such as quartz, Muscovite, albite and spodumene.

原生绿柱石形成于早期岩浆阶段，与造岩矿物石英、白云母、钠长石、锂辉石共生。

3.Granite is distributed in the periphery of mining area far from the andalusite bodies, and its contact zone can't control the pegmatitic andalusite bodies.

矿区内未见花岗岩体出露，矿区外围虽有花岗岩体分布，但距离矿体很远，矿体并不受岩体接触带控制。

4.Aplitic varieties are the rule, with the grain size ranging from medium to pegmatitic.

长 英 质 的变种照例具有中等至伟晶的粒度。

5.The geologist identified a large deposit of pegmatitic 伟晶岩的 minerals in the mountainous region.

地质学家在山区发现了一大块<pegmatitic>伟晶岩的pegmatitic>矿床。

6.During the field trip, we collected samples from a pegmatitic 伟晶岩的 outcrop that contained rare gemstones.

在实地考察中，我们从一个包含稀有宝石的<pegmatitic>伟晶岩的pegmatitic>露头收集了样本。

7.The pegmatitic 伟晶岩的 texture is characterized by its large crystal sizes, which can be seen with the naked eye.

这种<pegmatitic>伟晶岩的pegmatitic>纹理以其大的晶体尺寸为特征，肉眼可见。

8.In the laboratory, researchers studied the chemical composition of the pegmatitic 伟晶岩的 minerals to understand their formation.

在实验室中，研究人员研究了<pegmatitic>伟晶岩的pegmatitic>矿物的化学成分，以了解它们的形成。

9.The presence of pegmatitic 伟晶岩的 structures often indicates a history of intense geological activity.

存在<pegmatitic>伟晶岩的pegmatitic>结构通常表明经历了强烈的地质活动。

作文

The fascinating world of geology is filled with various terms that describe the intricate processes and formations of rocks. One such term is pegmatitic, which refers to a specific type of igneous rock that is characterized by its exceptionally large crystal sizes. These rocks typically form during the late stages of magma crystallization, when the remaining molten material cools slowly in a confined space. The result is a rock that often contains crystals measuring several centimeters or even meters in length, which is quite unusual compared to the more common crystalline structures found in most igneous rocks. 花岗岩质的岩石，通常由石英、长石和云母等矿物组成，形成时的高温和高压条件使得这些矿物能够在较大的空间内自由生长。 The formation of pegmatitic rocks can be attributed to several geological processes. One of the most significant factors is the concentration of certain elements within the magma. As the magma rises towards the Earth's surface, it may encounter different types of rocks and minerals, resulting in a complex mixture of chemical components. This process, known as fractional crystallization, leads to the formation of a highly evolved magma that is rich in rare elements such as lithium, beryllium, and tantalum. When this evolved magma cools slowly, it allows for the growth of large crystals, giving rise to the pegmatitic texture. Geologists often study pegmatitic rocks because they can provide valuable insights into the conditions under which they formed. For instance, the presence of certain minerals within these rocks can indicate the temperature and pressure conditions during their formation. Additionally, pegmatitic rocks are often associated with important mineral deposits, including gemstones and other economically valuable resources. For example, many famous gemstones, such as tourmaline and aquamarine, are found in pegmatitic veins, making them highly sought after by collectors and jewelers alike. In addition to their economic significance, pegmatitic rocks also hold aesthetic appeal. The large, well-formed crystals can create stunning visual displays, making them popular among rock hounds and mineral enthusiasts. Many collectors seek out pegmatitic specimens for their beauty and uniqueness, often showcasing them in displays or using them in jewelry. The vibrant colors and intricate patterns found in these crystals can captivate anyone who has an appreciation for natural beauty. In conclusion, the term pegmatitic encompasses much more than just a geological classification; it represents a unique intersection of natural processes, economic value, and aesthetic appeal. Understanding pegmatitic rocks allows geologists and enthusiasts alike to appreciate the complexity of Earth's geology and the remarkable processes that shape our planet. Whether one is studying the formation of these rocks or admiring their beauty, the significance of pegmatitic rocks cannot be overstated. They serve as a reminder of the dynamic nature of our planet and the incredible diversity of materials that it produces.

地质学的迷人世界充满了各种术语，这些术语描述了岩石的复杂过程和形成。其中一个术语是pegmatitic，它指的是一种特定类型的火成岩，其特征是其异常大的晶体尺寸。这些岩石通常在岩浆结晶的后期阶段形成，当剩余的熔融材料在一个封闭的空间中缓慢冷却时。结果是，岩石中常常包含几厘米甚至几米长的晶体，这与大多数火成岩中更常见的晶体结构相比是相当不寻常的。花岗岩质的岩石通常由石英、长石和云母等矿物组成，形成时的高温和高压条件使得这些矿物能够在较大的空间内自由生长。 pegmatitic岩石的形成可以归因于几种地质过程。其中一个最重要的因素是某些元素在岩浆中的浓度。当岩浆上升到地球表面时，它可能会遇到不同类型的岩石和矿物，导致化学成分的复杂混合。这个过程称为分馏结晶，它导致形成一种高度演化的岩浆，该岩浆富含锂、铍和钽等稀有元素。当这种演化的岩浆缓慢冷却时，它允许大晶体的生长，从而产生pegmatitic的纹理。 地质学家经常研究pegmatitic岩石，因为它们可以提供有关形成条件的宝贵见解。例如，这些岩石中某些矿物的存在可以指示其形成时的温度和压力条件。此外，pegmatitic岩石通常与重要的矿产沉积物相关，包括宝石和其他经济上有价值的资源。例如，许多著名的宝石，如电气石和海蓝宝石，都是在pegmatitic矿脉中发现的，使它们成为收藏家和珠宝商非常追捧的对象。 除了经济意义外，pegmatitic岩石也具有美学吸引力。大型、形状良好的晶体可以创造出令人惊叹的视觉展示，使其在岩石爱好者和矿物爱好者中非常受欢迎。许多收藏家寻找pegmatitic标本，以其美丽和独特性而闻名，通常将其展示或用于珠宝。那些晶体中鲜艳的颜色和复杂的图案可以吸引任何欣赏自然美的人。 总之，术语pegmatitic不仅仅包含地质分类；它代表了一种自然过程、经济价值和美学吸引力的独特交汇点。理解pegmatitic岩石使地质学家和爱好者都能欣赏地球地质的复杂性以及塑造我们星球的非凡过程。无论是研究这些岩石的形成还是欣赏它们的美丽，pegmatitic岩石的重要性都不容小觑。它们提醒我们地球的动态特性以及它所产生的材料的惊人多样性。