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Excavated the land and found raw iron and copper in it. ​

Answer» <html><body><p><strong>Answer:</strong></p><p>Iron ores[1] are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron <a href="https://interviewquestions.tuteehub.com/tag/oxides-1144499" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDES">OXIDES</a> and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (Fe</p><p>3O</p><p>4, 72.4% Fe), hematite (Fe</p><p>2O</p><p>3, 69.9% Fe), goethite (FeO(OH), 62.9% Fe), limonite (FeO(OH)·n(H2O), 55% Fe) or siderite (FeCO3, 48.2% Fe).</p><p></p><p></p><p>Ores containing very high quantities of hematite or magnetite (greater than about 60% iron) are known as "natural ore" or "direct shipping ore", meaning they can be fed directly into iron-making blast furnaces. Iron ore is the raw material used to make pig iron, which is one of the main raw <a href="https://interviewquestions.tuteehub.com/tag/materials-1089380" style="font-weight:bold;" target="_blank" title="Click to know more about MATERIALS">MATERIALS</a> to make steel—98% of the mined iron ore is used to make steel.[2] In 2011 the Financial <a href="https://interviewquestions.tuteehub.com/tag/times-1420471" style="font-weight:bold;" target="_blank" title="Click to know more about TIMES">TIMES</a> quoted Christopher LaFemina, mining analyst at Barclays Capital, saying that iron ore is "more <a href="https://interviewquestions.tuteehub.com/tag/integral-516833" style="font-weight:bold;" target="_blank" title="Click to know more about INTEGRAL">INTEGRAL</a> to the global <a href="https://interviewquestions.tuteehub.com/tag/economy-21801" style="font-weight:bold;" target="_blank" title="Click to know more about ECONOMY">ECONOMY</a> than any other commodity, except perhaps oil".[3]</p></body></html>


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