Fluid Inclusion

A fluid inclusion is a microscopic bubble of liquid and gas trapped within a crystal.

Part of speech: noun
Definition: Fluid inclusions represent minute capsules of fluid trapped within the structure of minerals as they form, offering valuable snapshots of the mineral-forming environment. These tiny inclusions, often microscopic in size, can comprise water, oil, or other gases like carbon dioxide, and occasionally contain small amounts of solid particles. Studying these inclusions helps geologists and gemologists understand the conditions under which the host mineral crystals formed, including the temperature, pressure, and chemical composition of the environment. This information is crucial in fields like geothermal energy research, hydrocarbon exploration, and even in tracing the origin of precious gemstones, providing insights into the geological history of the stone and the potential locations of mineral deposits.