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31	Journal of the Geological Society, London, Vol. 148, 1991, pp[removed], 8 figs, 2 tables. Printed in Northern Ireland The IUGS systematics of igneous rocks M. J . L E BAS’ & A . L . S T R E C K E I S E N 2 (On behalf Add to Reading List Source URL: www.utdallas.edu Language: English - Date: 2007-08-22 19:51:35 Volcanology Igneous rocks QAPF diagram Lamprophyre Nepheline syenite TAS classification Nephelinite Feldspathoid Lamproite Petrology Igneous petrology Volcanic rocks
32	Market & World Information Rare Metals The group of elements comprising the rare metals is not strictly defined, but typically include the rare Add to Reading List Source URL: www.empr.gov.bc.ca Language: English - Date: 2011-03-03 13:10:09 Igneous petrology Carbonatite Volcanology Nepheline syenite Ore Rare earth element Kimberlite Metal Mining Petrology Economic geology Geology
33	INDUSTRIAL MINERALS IN ARIZONA’S PAINT INDUSTRY Open File Report 89-1 May[removed]by Ken A. Phillips Add to Reading List Source URL: mines.az.gov Language: English - Date: 2011-04-14 16:16:35 Chemical elements Occupational safety and health Transition metals Coatings Paint Industrial mineral Pigment Calcium carbonate Nepheline syenite Chemistry Matter Excipients
34	Microsoft Word - kochemasov2.doc Add to Reading List Source URL: www.planetary.brown.edu Language: English - Date: 2013-03-26 11:30:46 Igneous petrology Nepheline syenite Gusev Planetary geology Basalt Syenite Spirit rover Meridiani Planum Petrology Mars Spacecraft
35	State of Arkansas Geological Add to Reading List Source URL: www.geology.ar.gov Language: English - Date: 2008-09-03 15:22:32 Volcanology Nepheline syenite Novaculite Igneous rock Syenite Geochemistry Xenolith Magma Intrusion Petrology Geology Igneous petrology
36	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
37	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
38	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
39	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
40	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

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