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71	FELDSPAR AND NEPHELINE SYENITE By Michael J. Potter Feldspar Feldspars are alumino-silicates having varying amounts of sodium, potassium, or calcium. In glassmaking, the largest end use, feldspar provides alumina for imp Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2000-01-31 09:55:01 Nepheline syenite Tectosilicates Unimin Feldspar Industrial mineral Syenite Aplite Ceramic Potash Petrology Igneous petrology Crystallography
72	2010 Minerals Yearbook FELDSPAR AND NEPHELINE SYENITE [ADVANCE RELEASE] U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2012-07-25 13:50:43 Igneous rocks Tectosilicates Nepheline syenite Unimin Feldspar Industrial mineral Leucite China stone Aplite Petrology Crystallography Igneous petrology
73	2007 Minerals Yearbook FELDSPAR AND NEPHELINE SYENITE U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2013-05-28 13:40:42 Feldspathoid Igneous rocks Nepheline syenite Tectosilicates Unimin Industrial mineral Feldspar Leucite Syenite Petrology Crystallography Igneous petrology
74	Feldspar and nepheline syenite in 2001 Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2002-07-17 14:14:34 Igneous rocks Tectosilicates Economic geology Nepheline syenite Feldspar Industrial mineral Unimin Syenite Aplite Petrology Igneous petrology Crystallography
75	FELDSPAR AND NEPHELINE SYENITE By Michael J. Potter Domestic survey data and tables were prepared by Hoa P. Phamdang, statistical assistant, and the world production table was prepared by Glenn J. Wallace, international Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2006-08-15 08:59:01 Tectosilicates Igneous rocks Nepheline syenite Feldspar Industrial mineral Unimin Syenite Aplite China stone Petrology Crystallography Igneous petrology
76	2011 Minerals Yearbook FELDSPAR AND NEPHELINE SYENITE [ADVANCE RELEASE] U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2013-05-24 11:12:23 Igneous rocks Tectosilicates Nepheline syenite Unimin Feldspar Industrial mineral Leucite Aplite China stone Petrology Crystallography Igneous petrology
77	FELDSPAR AND NEPHELINE SYENITE By Michael J. Potter Domestic survey data and tables were prepared by Hoa P. Phamdang, statistical assistant, and the world production table was prepared by Glenn J. Wallace, international Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2004-09-14 10:34:25 Tectosilicates Igneous rocks Nepheline syenite Industrial mineral Feldspar Unimin Syenite Aplite China stone Petrology Igneous petrology Crystallography
78	FELDSPAR AND NEPHELINE SYENITE By Michael J. Potter Domestic survey data and tables were prepared by Christopher H. Lindsay, statistical assistant, and the world production table was prepared by Ronald L. Hatch, lead int Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2000-08-16 12:47:20 Igneous rocks Tectosilicates Nepheline syenite Feldspar Industrial mineral Unimin Aplite Syenite China stone Petrology Igneous petrology Crystallography
79	2005 Minerals Yearbook Feldspar and Nepheline Syenite U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2006-08-15 07:54:48 Igneous rocks Economic geology Nepheline syenite Tectosilicates Unimin Industrial mineral Feldspar Leucite Syenite Petrology Igneous petrology Crystallography
80	2009 Minerals Yearbook FELDSPAR AND NEPHELINE SYENITE [ADVANCE RELEASE] U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2011-06-30 14:41:50 Igneous rocks Economic geology Tectosilicates Nepheline syenite Unimin Feldspar Leucite Industrial mineral Syenite Petrology Igneous petrology Crystallography

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