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41	AGES Brochure Series 004 Magnet Cove A synopsis of its geology, lithology and mineralogy. Add to Reading List Source URL: www.geology.ar.gov Language: English - Date: 2014-01-10 11:04:21 Igneous rocks Feldspathoid Volcanology Nepheline syenite Ijolite Carbonatite Leucite Phonolite Syenite Petrology Crystallography Igneous petrology
42	Pegmatites and their potential for mineral exploitation in Greenland No[removed]January 2008 Add to Reading List Source URL: www.geus.dk Language: English - Date: 2014-02-09 09:41:55 Igneous rocks Economic geology Cyclosilicates Gemstones Pegmatite Oxide minerals Granite Nepheline syenite Arfvedsonite Petrology Crystallography Chemistry
43	PETROLOGIC TERMINOLOGY P ETROGRAPHIC DESCRIPTIONS are essential parts of many geologic reports, but such descriptions are not easy reading, and they demand care to Add to Reading List Source URL: www.nwrc.usgs.gov Language: English - Date: 2012-07-06 09:15:58 Volcanology Metamorphic rocks Volcanic rocks Igneous rock Granite Rock microstructure Nepheline syenite Mafic Schist Petrology Geology Igneous petrology
44	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 Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2008-01-31 14:51:48 Feldspar Nepheline syenite Syenite Industrial mineral Mica Petrology Crystallography Tectosilicates
45	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 Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2010-01-27 08:36:12 Igneous petrology Feldspar Tectosilicates Nepheline syenite Granite Mica Aluminium Petrology Chemistry Crystallography
46	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 Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2014-03-07 14:53:44 Dielectrics Feldspar Tectosilicates Nepheline syenite Glass recycling Recycling Mica Glass Granite Chemistry Petrology Crystallography
47	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 Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2012-01-24 10:53:56 Business Feldspar Tectosilicates Glass recycling Nepheline syenite Mica Glass Recycling Ceramic Chemistry Dielectrics Matter
48	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 Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2009-01-29 14:39:42 Feldspar Tectosilicates Nepheline syenite Mica Granite Aluminium Petrology Chemistry Crystallography
49	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 Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2013-01-29 11:09:23 Feldspar Tectosilicates Recycling Mica Nepheline syenite Glass recycling Granite Aluminium Chemistry Petrology Crystallography
50	2006 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: 2007-09-17 12:57:33 Nepheline syenite Tectosilicates Industrial mineral Leucite Unimin Feldspar Syenite Aplite Granite Petrology Igneous petrology Crystallography

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