As a geologist, one of the minerals that I find particularly fascinating is augite. Augite is a common mineral found in many igneous rocks, and it is a valuable tool in helping to teach students about the rock cycle, geologic time, and earth processes.
To begin, it is helpful to give students a basic understanding of the properties of augite. Augite is a member of the pyroxene group of minerals, which are characterized by their two cleavage planes that intersect at about 90 degrees. This means that they break along straight lines at right angles to each other, which is a useful diagnostic feature for identifying minerals.
In terms of chemical composition, augite is a calcium-magnesium-iron silicate mineral. It typically appears as black or dark green prismatic crystals, and it can be identified by its color and crystal habit, as well as its cleavage and hardness.
Once students have an understanding of what augite looks like and how it can be identified, they can explore its role in the rock cycle. Augite is commonly found in basalt, which is a type of igneous rock that forms from the solidification of lava. When lava cools and solidifies, it forms crystals of various minerals, including augite.
By studying basalt and other igneous rocks that contain augite, students can gain insight into the processes that led to their formation. Additionally, they can learn about the different types of igneous rocks and the role they play in shaping the earth’s landforms and landscapes.
Another way to teach students about augite is to use it as a tool to explore geologic time. By studying the age of rocks that contain augite, students can learn about the various time periods in earth’s history and the changes that have occurred over millions of years.
Additionally, students can learn about the processes that have led to the formation of different types of rocks, including igneous, sedimentary, and metamorphic rocks. They can also explore the role that plate tectonics plays in the development of the earth’s crust and the formation of igneous rocks.
In conclusion, teaching students about augite is a valuable tool for helping them to understand the basics of geology and the earth sciences. By exploring the properties of this mineral and its role in the rock cycle and geologic time, students can gain insight into the processes that have shaped our planet over millions of years. With continued study and exploration, students can develop a deep appreciation for the complexity and beauty of the natural world around them.
