Master rock-forming mineral identification in thin section with this indispensable key. This comprehensive guide offers a systematic, dichotomous approach to identifying over 150 common minerals, simplifying complex microscopic mineralogy. Featuring detailed optical properties, crystal systems, and over 330 high-quality colour photomicrographs, it serves as a visual atlas. Essential for undergraduate and postgraduate students of mineralogy and petrology, as well as practising geologists across India, this book ensures accurate rock interpretation and confident identification.