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<title><![CDATA[EC21 Product Catalogs - u308]]></title>
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<title><![CDATA[COLTAN (Columbite-Tantalite)]]></title><link><![CDATA[https://zacotancoltd.en.ec21.com/COLTAN_Columbite_Tantalite--12050182_12050183.html]]></link><description><![CDATA[36.22% Nb205 19% Th02 0.041% U308 0.103 Moisture 0.073% Atomic Number 73 System Orthorhombic Molecular Weight 513.74 gm Mohs Hardness 6 to 6.5 Color Variations of black Specific Gravity ~ 8.0 
]]></description><pubDate><![CDATA[20250318]]></pubDate></item>

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