About Lesson
B.11. Minerals And Rocks
The earth is composed of various kinds of elements. These elements are in solid form in the outer layer of the earth and in hot and molten form in the interior.
Major Elements of the Earth’s Crust:
The elements in the earth’s crust are rarely found exclusively but are usually combined with the other elements and such combinations are called Minerals. Eg. Feldspar, Quartz, etc.