summarize what have learned in Chapter 5 Rock Forming Minerals topic, specifically the topic of Geochemistry. (100 words)

In Chapter 5 on Rock Forming Minerals, the geochemistry section emphasizes the composition and chemical properties of minerals that contribute to rock formation. It covers the abundance and distribution of elements in the Earth's crust, highlighting key minerals such as feldspar, quartz, and mica, which are dominant in igneous and metamorphic rocks. The chapter explains how elements combine through various geochemical processes, leading to the formation of different mineral classes. Additionally, it addresses the role of geochemical cycles and the influence of temperature and pressure on mineral stability, ultimately shaping Earth's lithosphere and contributing to its diversity of rocks.