coltan

noun

col·​tan ˈkōl-ˌtan How to pronounce coltan (audio)
: a dull black ore that consists of a mixture of columbite and tantalite and is a minor source of tantalum

Examples of coltan in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The deal could help bring in U.S. investment into the DRC, which holds valuable deposits of coltan, cobalt, lithium, copper, and gold. Ross O'Keefe, The Washington Examiner, 21 June 2025 Rwanda is one of the world’s top suppliers of coltan and has surpassed DRC’s export of the mineral in recent years. Nimi Princewill, CNN, 12 Feb. 2025 Congo produced about 40% of the world’s coltan in 2023, according to the U.S. Geological Survey, with Australia, Canada and Brazil being other major suppliers. David Yusufu Kibingila, Los Angeles Times, 23 May 2025 Over the past month, M23’s lightning advances have expanded its control over North Kivu province’s lucrative coltan, gold and tin ore mines, uprooting thousands in what was already one of the world’s most dire humanitarian crises. Reuters, CNN, 8 Feb. 2025 See All Example Sentences for coltan

Word History

Etymology

International Scientific Vocabulary columbo-tantalite, from columbite + -o- + tantalite

First Known Use

1999, in the meaning defined above

Time Traveler
The first known use of coltan was in 1999

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Cite this Entry

“Coltan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coltan. Accessed 5 Jul. 2025.

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