What is this close-up picture? (WotsThat: Iron ore)

Question

What object is shown in this zoomed-in close-up photo?

SiltWarden · Accepted Answer

Iron ore. Iron ore is the raw material that powers civilization—it's been mined for thousands of years and transformed into the steel used in everything from skyscrapers to smartphones. The most common types are hematite and magnetite, which can contain up to 70% pure iron.

Answer: Iron ore

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