Igneous Rock Textures and Classification Based on Grain Size and Shape - Igneous Petrology

Learn how to classify igneous rock textures based on grain size and shape in this 23-minute video. The course covers the importance of textures in igneous rock classification, the thermodynamics of crystallization, nucleation, growth rates, and ion diffusion rates. You will also learn about different grain sizes (phaneritic, aphanitic, pegmatitic, glassy) and grain shapes (porphyritic vs vesicular) in igneous rocks. The teaching method includes theoretical explanations and visual examples. This course is intended for geology enthusiasts, students, teachers, and anyone interested in earth sciences.