Banded iron formations are composed of almost 99 percent silica with only minor iron impurities that give a streaked or banded appearance.

Name: Banded iron formations are composed of almost 99 percent silica with only minor iron impurities that give a streaked or banded appearance.
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Question

Quizplus · Accepted Answer

Banded iron formations are actually composed of almost 50 percent iron and 50 percent silica. The iron impurities are what give the formations their distinct banded appearance.

Banded Iron Formations Are Composed of Almost 99 Percent Silica