Zirconium and hafnium
What are zirconium and hafnium? Zirconium (Zr) is commonly found in felsic rock an igneous rock rich in silica and feldspar. ... It is found in economic concentrations in heavy mineral sand deposits. ... Hafnium is a by-product of zircon refining. Global zircon production is dominated by Australia (33%) and South Africa (27%), with China (11% ...
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