Geomicrobiology is the study of the interactions between microorganisms and their surrounding environment, particularly in geological and mineralogical settings. This field focuses on understanding how microorganisms thrive in extreme environments, such as deep-sea vents, caves, and the subsurface, and how they influence geochemical cycles and mineral formation. Geomicrobiologists use molecular biology, microbiology, geochemistry, and mineralogy techniques to investigate the role of microorganisms in shaping the Earth's geochemical processes and biosphere. This research area has important implications for understanding the origins of life, biogeochemical cycling, mineral weathering, and environmental remediation.