Principles of Igneous and Metamorphic Petrology Anthony R. Philpotts and Jay J. Ague is an English-language textbook that focuses on igneous and metamorphic petrology. This fully revised book is suitable for students and professionals seeking deeper insight into the formation processes of igneous and metamorphic rocks.
The book provides a clear and thorough overview of the underlying petrological principles, assuming only basic knowledge of physics, chemistry, and calculus. With more than 500 illustrations, including many color images, it supports teaching through clear mathematical foundations and helps make complex concepts accessible.
The new edition includes an introductory chapter that outlines the broader framework and is enriched with qualitative questions at the end of each chapter, intended to promote discussion and understanding. As such, it is an essential learning tool for advanced courses in igneous and metamorphic petrology.
The content aligns with fields such as petrology, petrography, mineralogy, and the chemistry of minerals, crystals, and gemstones, and is relevant within the earth sciences.

