Earth’s Mineralogy Takes Off—Pegmatites
Lecture no. 23 from the course: The Origin and Evolution of Earth: From the Big Bang to the Future of Human Existence
Taught by Professor Robert M. Hazen | 30 min | Categories: The Great Courses Plus Online Science Course
Continue your study of the stages of mineral evolution by looking at what happens when granite partially melts. Under the right conditions, the resulting crystals can be unusually large and strikingly beautiful. Such rocks are called pegmatites, and their formation involves some of the rarest elements on the planet.