https://geoscan.nrcan.gc.ca/starweb/geoscan/servlet.starweb?path=geoscan/fullf.web&search1=R=296103
2013
Columbite-tantalite series minerals are a main constituent of Ta and Nb ores. They are also present in Li, REE, Be, Zr, W, Sn, and Cs -bearing deposits...
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