Nb-Ta oxide minerals in alluvial placers from Kamakwie, NW Sierra Leone: compositional variations and evolutionary trend

• Autoři: LOUN Jan; NOVÁK Milan; ŠKODA Radek; ČOPJAKOVÁ Renata; VAŠINOVÁ GALIOVÁ Michaela; PROKEŠ Lubomír
• Rok publikování: 2014
• Druh: Konferenční abstrakty
• Fakulta / Pracoviště MU: Přírodovědecká fakulta
• Popis: Columbite-tantalite group minerals are extensively mined from alluvial placers near Kamakwie, Sierra Leone. Chemical composition and evolutionary trend of these minerals are presented. This extreme composition may be useful, along with trace elements variability and geochronological information, for the „fingerprinting“ of Ta ores.