Shares of Great Western Minerals Group (GWG.V) rose as much as 12 percent on Monday after the company said it had raised its interest in Rare Earth Extraction Co (Rareco) to 70.2 percent. Saskatoon, Saskatchewan-based Great Western is in the process of buying out South Africa's Rareco to secure control of the Steenkampskraal mine. Steenkampskraal is a small, but very high-grade, rare earth deposit in South Africa that was previously mined in the 1950s and 1960s.
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