Trigonal crystal system

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11	American Mineralogist, Volume 58, pages[removed], 1973 The Crystallography Add to Reading List Source URL: www.minsocam.org Language: English - Date: 2007-01-13 16:45:35 Matter Mineralogy Calcite Limestone Dolomite Mineral Cleavage Trigonal crystal system Kutnohorite Chemistry Carbonate minerals Crystallography
12	KFe3+ 3 (SO4 )2 (OH)6 Add to Reading List Source URL: www.handbookofmineralogy.org Language: English - Date: 2007-09-30 01:58:46 Sulfate minerals Jarosite Alunite Svanbergite Pyrite Trigonal crystal system Chemistry Crystallography Natural resources
13	PDF Document Add to Reading List Source URL: www.minsocam.org Language: English - Date: 2007-04-05 00:58:58 Carbonate minerals Mineralogy Cerite Nesosilicates Chemical elements Cerium Bastnäsite Trigonal crystal system Rare earth element Chemistry Matter Crystallography
14	PDF Document Add to Reading List Source URL: www.handbookofmineralogy.com Language: English - Date: 2007-09-30 01:58:46 Sulfate minerals Jarosite Alunite Svanbergite Pyrite Trigonal crystal system Chemistry Crystallography Natural resources
15	PDF Document Add to Reading List Source URL: rruff.geo.arizona.edu Language: English Sulfate minerals Jarosite Alunite Svanbergite Pyrite Trigonal crystal system Chemistry Crystallography Natural resources