What geological process formed Myanmar's famous Mogok ruby deposits?

The formation of Myanmar's renowned Mogok ruby deposits can be attributed to regional metamorphism, which is the process by which existing rocks are altered by heat, pressure, and chemically active fluids. This geological activity typically takes place over large areas and can lead to the formation of high-quality gemstones.

In the case of the Mogok region, the unique conditions of metamorphism caused the original mineral content of the surrounding rocks to transform into rubies through the recrystallization of corundum under intense heat and pressure. Additionally, the presence of trace elements like chromium during this metamorphic process contributes to the rich red color characteristic of rubies.

While other geological processes, such as igneous intrusion, erosion and sedimentation, and volcanic activity, can also contribute to gemstone formation in different contexts, they do not specifically account for the unique creation of the high-quality rubies found in Mogok. The region's geological history emphasizes the significance of regional metamorphism in producing some of the world's most sought-after rubies.