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Niobium
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181	190 ZIRCONIUM AND HAFNIUM (Data in metric tons unless otherwise noted) Domestic Production and Use: Zircon sand was produced at two mines in Florida, one mine in Georgia, and two mines in Virginia. A new mine that began Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2005-01-12 14:48:43 Transition metals Zirconium Hafnium Zircon Niobium Baddeleyite Heavy mineral sands ore deposits Control rod Group 4 element Matter Chemistry Chemical elements
182 $Transition metals / Refractory metals / Tantalum / Niobium / Defense National Stockpile Center / Hafnium / Scrap / Ore / Coltan / Matter / Chemistry / Chemical elements$	168 TANTALUM (Data in metric tons of tantalum content unless otherwise noted) Domestic Production and Use: No significant U.S. tantalum mine production has been reported since[removed]Domestic tantalum resources are of lo Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2008-02-01 10:47:13 Transition metals Refractory metals Tantalum Niobium Defense National Stockpile Center Hafnium Scrap Ore Coltan Matter Chemistry Chemical elements
183	182 VANADIUM (Data in metric tons of vanadium content unless otherwise noted) Domestic Production and Use: Eight U.S. firms that make up the vanadium industry produced ferrovanadium, vanadium pentoxide, vanadium metal, Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2005-01-12 14:44:33 Transition metals Vanadium Ferroalloy Titanium alloy Steel Oxide Scrap Niobium Chemistry Matter Chemical elements
184 $Matter / Refractory metals / Niobium / Tantalum / Superalloy / Ferroalloy / Nickel / Steel / Chemistry / Chemical elements / Transition metals$	54 COLUMBIUM (NIOBIUM) (Data in metric tons of columbium content, unless otherwise noted) Domestic Production and Use: There has been no significant domestic columbium-mining industry since[removed]Domestic columbium reso Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 1999-02-05 13:37:53 Matter Refractory metals Niobium Tantalum Superalloy Ferroalloy Nickel Steel Chemistry Chemical elements Transition metals
185 $Chemical elements / Refractory metals / Transition metals / Oxides / Niobium / Tantalum / Coltan / Cabot Corporation / Ferroniobium / Chemistry / Matter / Oxide minerals$	2010 Minerals Yearbook NIOBIUM (COLUMBIUM) AND TANTALUM [ADVANCE RELEASE] U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2012-04-05 14:14:08 Chemical elements Refractory metals Transition metals Oxides Niobium Tantalum Coltan Cabot Corporation Ferroniobium Chemistry Matter Oxide minerals
186 $Transition metals / Refractory metals / Aerospace materials / Niobium / Noble metals / Tantalum / Nickel / Ferroalloy / Superalloy / Chemistry / Matter / Chemical elements$	50 COLUMBIUM (NIOBIUM) (Data in metric tons of columbium content, unless otherwise noted) Domestic Production and Use: There has been no significant domestic columbium mining since[removed]Domestic columbium resources are Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2001-02-01 11:02:04 Transition metals Refractory metals Aerospace materials Niobium Noble metals Tantalum Nickel Ferroalloy Superalloy Chemistry Matter Chemical elements
187	VANADIUM By Henry E. Hilliard In 1995, vanadium consumption was 4,640 metric tons of contained vanadium. U.S. supply consisted of vanadiumbearing ferrophosphorus slag, iron slag, fly ash, petroleum residues, and spent ca Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 1997-02-07 08:38:05 Transition metals Vanadium Vanadium compounds Ferroalloy Oxide Niobium Chemistry Matter Chemical elements
188	186 ZIRCONIUM AND HAFNIUM (Data in metric tons unless otherwise noted) Domestic Production and Use: The zirconium-silicate mineral zircon is produced as a coproduct from the mining and processing of heavy minerals. Two Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2010-01-27 10:20:12 Transition metals Zirconium Hafnium Zircon Niobium Baddeleyite Group 4 element Chemistry Matter Chemical elements
189 $Refractory metals / Transition metals / Niobium / Oxide minerals / Tantalum / Coltan / Ferroniobium / Avalon Rare Metals / Ore / Matter / Chemistry / Chemical elements$	2012 Minerals Yearbook NIOBIUM and tantalum [advance Release] U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2014-06-02 08:24:02 Refractory metals Transition metals Niobium Oxide minerals Tantalum Coltan Ferroniobium Avalon Rare Metals Ore Matter Chemistry Chemical elements
190 $Chemical elements / Refractory metals / Transition metals / Tantalum / Niobium / Coltan / Cabot Corporation / Ore / Avalon Rare Metals / Chemistry / Matter / Oxide minerals$	COLUMBIUM (NIOBIUM) AND TANTALUM By Larry D. Cunningham Domestic survey data and tables were prepared by Robin C. Kaiser, statistical assistant, and the world production table was prepared by Regina R. Coleman, internati Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2002-10-10 09:17:36 Chemical elements Refractory metals Transition metals Tantalum Niobium Coltan Cabot Corporation Ore Avalon Rare Metals Chemistry Matter Oxide minerals

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