![Egyptian tantalum niobium and tin deposits](/e69yszg/723.jpg)
Egyptian tantalum niobium and tin deposits
Apr 11, 2013· Mineral deposits in alkaline igneous rocks typically contain high contents of zirconium, yttrium (Y), niobium and the rare earth elements, but are less commonly enriched in tantalum. Several factors contribute to the enrichment of High Field Strength Elements33 (HFSE), such .