| http://www.w3.org/ns/prov#value | - Considerable expectations have been created in the South American country around this group of 17 metals, called ???rare??? because they are found in relatively low proportions in rock and sediment and rarely exist in pure form.Rare earth elements (REEs) like dysprosium, lanthanum and neodymium are key components in the manufacture of widely used devices such as mobile phones, laptop and tablet co
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