Georgia Department of Education
Ga Virtual Learning: Georgia Virtual Learning: Geology: Minerals
In this amazing interactive tutorial, you'll learn about minerals - the building blocks or rocks and the Earth. We'll talk about what makes something a mineral, and how differences in these minerals let us organize them into different...
Amethyst Galleries
Amethyst Galleries: Mineral Gallery: What Is Streak?
Streak is the color of the powder of a mineral. This page discusses the importance of streak when identifying minerals.