magmatic segregation
Quick Summary
Magmatic segregation in geology refers to processes where different mineral or rock components separate within a cooling magma. This can occur through gravitational settling of early-formed crystals or the separation of immiscible liquid droplets, similar to how oil and water don't mix.12
These segregations can form layers or pods enriched in specific minerals. A key example is liquid immiscibility, where a magma separates into two distinct liquid phases. This process is crucial for forming rich ore deposits, particularly those containing copper, nickel, and platinum-group metals, often associated with iron sulfide-rich liquids. Famous examples include the Merensky Reef in South Africa and the Sudbury Igneous Complex in Canada.2
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.
