Caption

Iron. Samples of the transition metal iron (Fe). Iron is the most common element (by mass) found in the Earth, forming much of the planet's outer and inner core, and is the fourth most common in the Earth's crust. It is highly important in the engineering and construction industry, and is used to make steel. It is also the key component of haemoglobin in the blood, which allows oxygen to be transported around the body.

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Model release not required. Property release not available.

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