A review of the coordination chemistry of hydrothermal systems, or do coordination changes make ore deposits?

• A molecular-level understanding underpins accurate models of reactivetransport.
• Changes in coordination geometry are associated with large changes in entropy.
• Coordination changes occur rapidly with T, resulting in rapid changes in solubility.
• Hydration and coordination geometry determine affinity for vapor transport.
• A periodic table of hydrothermal coordination chemistry highlights geochemical trends.