accessory mineral

简明释义

1. 副矿物; 2. 次要矿物;

英英释义

例句

1.Petrographic analysis revealed various accessory minerals that contributed to the rock's unique color.

岩石薄片分析揭示了多种伴生矿物，它们对岩石独特的颜色产生了贡献。

2.Understanding the distribution of accessory minerals can help geologists reconstruct past geological events.

了解伴生矿物的分布可以帮助地质学家重建过去的地质事件。

3.The geologist identified the presence of accessory mineral in the rock sample, indicating a complex formation history.

地质学家在岩石样本中识别出伴生矿物的存在，表明其形成历史复杂。

4.In this sedimentary environment, accessory minerals can provide insights into the depositional conditions.

在这种沉积环境中，伴生矿物可以提供沉积条件的见解。

5.The study focused on the role of accessory minerals in influencing the overall composition of the granite.

这项研究集中于伴生矿物在影响花岗岩整体成分中的作用。

作文

In the study of geology and mineralogy, the term accessory mineral refers to minerals that are present in small amounts within a rock or sediment but do not significantly affect the overall composition or classification of that material. These minerals often provide valuable information about the conditions under which the rock was formed, including temperature, pressure, and the chemical environment. Understanding accessory minerals is crucial for geologists as they can reveal insights into the geological history and processes that shaped the Earth’s crust.For instance, in igneous rocks, common accessory minerals include zircon, apatite, and titanite. Zircon is particularly important because it can be dated using uranium-lead dating techniques, allowing scientists to determine the age of the rock and the events that led to its formation. Similarly, apatite can provide clues about the temperature and pressure conditions during crystallization, making it a key player in understanding the evolution of magmatic systems.In metamorphic rocks, accessory minerals such as garnet, kyanite, and staurolite can indicate the metamorphic conditions that the rock has undergone. The presence of these minerals can help geologists reconstruct the metamorphic history and infer the tectonic processes that affected the area. For example, garnet often forms under specific pressure and temperature conditions, and its composition can indicate the metamorphic grade of the rock.Sedimentary rocks also contain accessory minerals, which can provide insights into the source materials and depositional environments. Minerals like quartz, clay minerals, and heavy minerals (such as magnetite and ilmenite) are often found in small quantities but play a significant role in interpreting the geological history of sedimentary basins. The presence of certain accessory minerals can indicate past environmental conditions, such as changes in sea level or climate, which are essential for understanding Earth's history.Moreover, accessory minerals can also have economic significance. Some of them are sources of valuable metals and elements. For instance, zircon is not only used for dating but also as a source of zirconium, which has applications in ceramics and nuclear reactors. Similarly, certain heavy minerals found as accessory minerals in sands can be mined for their titanium and rare earth element content.In conclusion, while accessory minerals may be present in minor quantities within rocks, their significance should not be underestimated. They serve as indicators of the geological processes that have occurred over millions of years and provide critical information for both academic research and practical applications in mining and resource management. Therefore, a thorough understanding of accessory minerals is essential for anyone studying geology or working in related fields, as they unlock the stories hidden within the Earth's crust.

在地质学和矿物学的研究中，术语伴生矿物指的是存在于岩石或沉积物中的少量矿物，但并不显著影响该材料的整体成分或分类。这些矿物通常提供有关岩石形成条件的重要信息，包括温度、压力和化学环境。理解伴生矿物对于地质学家至关重要，因为它们可以揭示塑造地壳的地质历史和过程。例如，在火成岩中，常见的伴生矿物包括锆石、磷灰石和钛矿。锆石尤其重要，因为它可以通过铀-铅定年技术进行测定，从而使科学家能够确定岩石的年龄以及导致其形成的事件。同样，磷灰石可以提供关于结晶过程中温度和压力条件的线索，使其成为理解岩浆系统演化的关键因素。在变质岩中，像石榴石、蓝晶石和十字石等伴生矿物可以指示岩石经历的变质条件。这些矿物的存在可以帮助地质学家重建变质历史并推断影响该地区的构造过程。例如，石榴石通常在特定的压力和温度条件下形成，其成分可以指示岩石的变质级别。沉积岩也包含伴生矿物，这些矿物可以提供有关源材料和沉积环境的见解。像石英、粘土矿物和重矿物（如磁铁矿和钛铁矿）通常以少量存在，但在解释沉积盆地的地质历史中发挥着重要作用。某些伴生矿物的存在可以指示过去的环境条件，如海平面或气候变化，这对于理解地球的历史至关重要。此外，伴生矿物也可能具有经济意义。其中一些是有价值金属和元素的来源。例如，锆石不仅用于定年，还作为锆的来源，锆在陶瓷和核反应堆中具有应用。同样，某些作为伴生矿物存在于沙子中的重矿物可以被开采以获取其钛和稀土元素含量。总之，虽然伴生矿物在岩石中可能以微量存在，但它们的重要性不应被低估。它们作为数百万年来发生的地质过程的指示器，并为学术研究和采矿及资源管理的实际应用提供了关键信息。因此，全面理解伴生矿物对任何学习地质学或在相关领域工作的人来说都是必不可少的，因为它们揭示了隐藏在地壳中的故事。