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Replacement deposit identification and geology

An ore deposit formed when pre-existing rock is dissolved and simultaneously replaced by ore and gangue minerals precipitated from hydrothermal fluids. The replacement process preserves the external form and texture of the original rock while completely changing its composition. Replacement is most effective in reactive rocks such as limestone and dolomite, producing skarns and carbonate-hosted base metal deposits. Field: economic geology. Example: The massive sulfide replacement bodies at Leadville, Colorado, formed when hydrothermal fluids replaced dolomite with sphalerite, galena, and silver minerals, producing one of the richest silver-lead-zinc districts in the American West.. Related terms: Metasomatism, Skarn, Hydrothermal, Carbonate.

Sources, scope & corrections

These authoritative resources support category-level nomenclature, terminology, identification methods, and safety. When a specimen-specific safety warning appears, the public-health source listed here directly supports that precaution. They are not line-by-line citations for every other property on this entry, and natural specimens vary.

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GeoMiner
Last updated
2026-03-30T15:19:42.055955+00:00
Review status
Published; not independently peer-reviewed
  • USGS Thesaurus — U.S. Geological Survey. Controlled earth-science terminology used to describe USGS information resources.
  • Glossary of Geologic Terms — U.S. National Park Service. Geologic definitions prepared by the NPS Geologic Resources Inventory.

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Common questions

What does Replacement deposit mean in geology?
An ore deposit formed when pre-existing rock is dissolved and simultaneously replaced by ore and gangue minerals precipitated from hydrothermal fluids. The replacement process preserves the external form and texture of the original rock while completely changing its composition. Replacement is most effective in reactive rocks such as limestone and dolomite, producing skarns and carbonate-hosted base metal deposits.
What is an example of Replacement deposit?
The massive sulfide replacement bodies at Leadville, Colorado, formed when hydrothermal fluids replaced dolomite with sphalerite, galena, and silver minerals, producing one of the richest silver-lead-zinc districts in the American West.
Which earth-science field uses the term Replacement deposit?
Replacement deposit is used in economic geology.
Which terms are related to Replacement deposit?
Related terms in this reference are Metasomatism, Skarn, Hydrothermal, Carbonate.

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