the process of metallurgy is one of the oldest branches of science it can be traced back to bc the th century, only elements were known and this number
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iron is a chemical element with symbol fe from latin ferrum and atomic number .it is a metal in the first transition series.it is by mass the most common
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calcite, which gets its name from chalix the greek word for lime, is a most amazing and yet, most common mineral.it is one of the most common minerals on the face
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