Magnesite

Chemical formula MgCO3. Magnesite is a common mineral that typically takes the form of a colourless or pale hexagonal crystal. Used in the production of magnesium oxide found in industrial and refinery processes due to its extreme high temperature tolerance.

— In-Game Description

Magnesite is a Mineral Commodity. It is produced exclusively through Surface Mining. It is consumed by many Industrial and Refinery markets.