Geomicrobiology is the scientific field at the intersection of geology and microbiology and is a major subfield of geobiology. It concerns the role of microbes on geological and geochemical processes and effects of minerals and metals to microbial growth, activity and survival.[2] Such interactions occur in the geosphere (rocks, minerals, soils, and sediments), the atmosphere and the hydrosphere.[3] Geomicrobiology studies microorganisms that are driving the Earth's biogeochemical cycles, mediating mineral precipitation and dissolution, and sorbing and concentrating metals.[4] The applications include for example bioremediation,[5]mining, climate change mitigation[6] and public drinking water supplies.[7]