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Definitions
a valuable black mineral combining niobite and tantalite; used in cell phones and computer chips
Used in a sentence
“Coltan is used for the production of tantalum capacitors.”
“[…] as of 2003 over one billion cell phones were in use worldwide, so by the time the high-tech bubble approached its bursting point in 2000 and 2001, coltan had become an extremely hot commodity.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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