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This is a 70lbs Tantalum bearing carbonatite from the Verity property in Blue River British Columbia

Research Reports

	Niobium (Columbium) and Tantalum Author: Larry D. Cunningham
	http://minerals.usgs.gov/minerals/pubs/commodity/niobium/niobmyb01.pdf Minerals Yearbook from the USGS on columbium and tantalum.

	Tantalum and Niobium - the keys to the markets of the future Publisher: H.C. Starck
	http://www.hcstarck.com/pages/222/tantalum_and_niobium.pdf Tantalum is among the rarer elements in the earth's crust. It ranks between thorium and caesium in frequency and is therefore rarer than lanthanum, lead, gallium or boron. Even niobium, which always occurs in association with tantalum, is ten times more available. Tantalum was discovered in 1802, when A.G. Ekeberg separated the oxide of a new element from a Finnish mineral similar to columbite. The extremely stable oxide did not form a salt even when exposed to an excess of acid.....

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