Minerals are naturally occurring, inorganic substances with a defined chemical composition and crystalline structure, forming the building blocks of rocks and essential to various biological and industrial processes. Articles are a unique way for readers to learn about the world around them. In addition to building reading comprehension skills and increasing vocabulary, articles can be used for writing and research. Minerals is broken into 6 single-page sections: What are Minerals?, Properties, Where Minerals are Found, Mining and Conservation, How Minerals are Used, and Words to Know.