131![60 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2007 had an estimated value of about $45 million. The three leading producers accounted for abou 60 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2007 had an estimated value of about $45 million. The three leading producers accounted for abou](https://www.pdfsearch.io/img/060186ef8c68d9f5fe2839162de97c2a.jpg) | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-01-31 14:51:48
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132![54 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2009 was valued at about $36 million. The three leading producers accounted for about 57% of the 54 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2009 was valued at about $36 million. The three leading producers accounted for about 57% of the](https://www.pdfsearch.io/img/1171daab3658dd233fa944d2ca330b9e.jpg) | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-27 08:36:12
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133![54 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2013 was valued at about $37.7 million. The three leading producers accounted for about 87% of p 54 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2013 was valued at about $37.7 million. The three leading producers accounted for about 87% of p](https://www.pdfsearch.io/img/0d3928f0ed27d8fc7f2eee46e931eca9.jpg) | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-07 14:53:44
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134![54 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2011 was valued at about $43 million. The three leading producers accounted for about 71% of the 54 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2011 was valued at about $43 million. The three leading producers accounted for about 71% of the](https://www.pdfsearch.io/img/8d0ac65b2f58207df53f3b40c99cbf31.jpg) | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 10:53:56
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135![56 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2008 had an estimated value of about $36 million. The three leading producers accounted for abou 56 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2008 had an estimated value of about $36 million. The three leading producers accounted for abou](https://www.pdfsearch.io/img/ecc030672d32e19735a5611e5a12275e.jpg) | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2009-01-29 14:39:42
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136![54 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2012 was valued at about $39 million. The three leading producers accounted for about 83% of the 54 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2012 was valued at about $39 million. The three leading producers accounted for about 83% of the](https://www.pdfsearch.io/img/fd7032a569494e0d6ed0084a8101b08f.jpg) | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-29 11:09:23
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137![2006 Minerals Yearbook FELDSPAR AND NEPHELINE SYENITE U.S. Department of the Interior U.S. Geological Survey 2006 Minerals Yearbook FELDSPAR AND NEPHELINE SYENITE U.S. Department of the Interior U.S. Geological Survey](https://www.pdfsearch.io/img/9168d6e5a87bf8d56c268700caeda31a.jpg) | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-09-17 12:57:33
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138![2008 Minerals Yearbook FELDSPAR U.S. Department of the Interior U.S. Geological Survey 2008 Minerals Yearbook FELDSPAR U.S. Department of the Interior U.S. Geological Survey](https://www.pdfsearch.io/img/36768d8ae316247617068ce8779a0d0c.jpg) | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-08-15 09:14:11
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139![62 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2005 had an estimated value of about $44 million. The three leading producers accounted for abou 62 FELDSPAR (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: U.S. feldspar production in 2005 had an estimated value of about $44 million. The three leading producers accounted for abou](https://www.pdfsearch.io/img/42d193f0adf62f1735d97d8871a3aa67.jpg) | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-01-18 13:31:31
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140![FELDSPAR AND NEPHELINE SYENITE By Michael J. Potter Feldspar Feldspars are alumino-silicates with varying amounts of sodium, potassium, or calcium. In glassmaking, the largest end use, feldspar provides alumina for impro FELDSPAR AND NEPHELINE SYENITE By Michael J. Potter Feldspar Feldspars are alumino-silicates with varying amounts of sodium, potassium, or calcium. In glassmaking, the largest end use, feldspar provides alumina for impro](https://www.pdfsearch.io/img/a7b622bfb3b2aaba5a3da33f67bc8c09.jpg) | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-07-21 07:10:39
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