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Colombia’s substantial but largely untapped mineral resources are attracting increasing international attention. The United States is seeking more secure supplies of raw materials essential for defence, electronics and advanced manufacturing. A new cooperation agreement between Washington and Bogotá aims to encourage mining investment while reducing dependence on China.
On 8 September 2026, US Secretary of State Marco Rubio and Colombian Foreign Minister Omar Bula signed an agreement to deepen cooperation on critical minerals.
According to the US Department of State, the agreement covers geological exploration, mining technology, investment opportunities and the development of more resilient supply chains.
The initiative reflects growing concern in Washington over China's dominant position in the extraction and processing of several strategically important minerals.
Many of these materials are essential for military equipment, semiconductors, batteries and other advanced technologies.
New mineral discoveries attract attention
Colombia has long been an important producer of oil and coal. However, the country also possesses deposits of nickel, copper, silver, cobalt and tungsten that remain partly undeveloped.
One particularly promising area is the Guayabales mining project in the department of Caldas.
Canadian exploration company Collective Mining has identified mineralisation containing gold, silver, copper and tungsten at the project.
In October, the company announced further drilling results from its Apollo deposit. One 5.5-metre drilling interval contained 0.83% tungsten trioxide and 1,283 grams of silver per tonne of rock.
Tungsten is used in cutting tools, heat-resistant components and military equipment. Its exceptionally high melting point makes it valuable in demanding industrial applications.
Collective Mining has also published an initial mineral resource estimate for Apollo.
However, the project remains under development, and commercial mining operations have not yet started.
The discovery nevertheless highlights Colombia's potential to become a more important supplier of metals used in advanced manufacturing and defence applications.
China dominates critical supply chains
Antimony is another mineral attracting strategic interest.
The metal is used in ammunition, flame retardants and certain electronic components. Securing reliable supplies has become increasingly important for countries seeking to reduce their exposure to concentrated global production.
At the Güíntar-Aleman-Margaritas mining project, approximately 50 kilometres west of Medellín, Royal Road Minerals has reported antimony discoveries alongside silver and other metals.
These deposits could eventually provide the United States with additional sources of strategically important raw materials.
China's earlier export restrictions on gallium, germanium and antimony have demonstrated the vulnerability of international supply chains.
According to the US Geological Survey, the United States' 2025 list of critical minerals includes 60 mineral commodities considered essential to economic activity and national security.
Washington is therefore seeking to diversify its sources of supply and strengthen cooperation with countries capable of developing commercially viable deposits.
Investment will determine future production
Closer cooperation on critical minerals is also part of Colombia's changing foreign policy under President Abelardo de la Espriella, who has sought to improve relations with Washington.
For Colombia, developing new mining projects could generate export revenues, employment and additional government income.
However, significant challenges remain.
Several mineral deposits are located in regions where illegal mining and armed groups have historically affected economic development and security.
Exploration results also do not automatically mean that mineral deposits can be developed profitably.
Infrastructure, environmental requirements, mining permits and access to financing will all influence whether proposed projects proceed.
According to an analysis published by Matthew Smith on Oilprice.com on 19 October 2026, Colombia could eventually become an important supplier of critical minerals to the United States.
Such developments could strengthen Colombia's position in international raw material markets while providing Washington with alternatives to Chinese-controlled supply chains.
Nevertheless, Colombia's future importance will depend on whether exploration discoveries can be transformed into commercially sustainable mining operations.
Sources: Oilprice.com, Matthew Smith, 19 October 2026; US Department of State, 8 September 2026; Collective Mining, 8 September and 13 October 2026; US Geological Survey (USGS).