US iron ore mining is dominated by the Precambrian banded iron formation deposits around lake superior in Michigan.
Explanation:
The iron resources of Lake Superior were the largest ever discovered in the United States, and they dominated American iron mining by the late 1800s. The Lake Superior iron ores are found in long, linear belts known as iron ranges in the Precambrian banded iron formation.
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US iron ore mining is dominated by the Precambrian banded iron formation deposits around lake superior in Michigan.
Explanation:
The iron resources of Lake Superior were the largest ever discovered in the United States, and they dominated American iron mining by the late 1800s. The Lake Superior iron ores are found in long, linear belts known as iron ranges in the Precambrian banded iron formation.