Ores from hot water main content.

Ores from hot water

Part of Hall of Planet Earth.

Ores from Hot Water AMNH/R.Mickens

Driven by heat from bodies of molten rock in the crust, hot water circulates through cracks, dissolving minerals in the rocks through which it passes. As the water moves into cooler rocks, the dissolved minerals precipitate and accumulate in fractures and cavities. Many metallic ore deposits, such as those represented in the samples shown here, form in this way.