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Examples of mineral resources are iron, diamond, gold, silver, copper, aluminium, granite, marble, gypsum, clay, salt, rare earth elements, or fossil fuels (coal, oil, natural gas). Fact: The Democratic Republic of Congo is considered the world's richest country in terms of wealth in natural resources. Most of the raw mineral deposits remain untapped and are worth an estimated $24 trillion. These deposits include the world's largest coltan reserves and considerable amounts of cobalt.
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