Danas Classification of Minerals

TaUe 12.15. (continued) Strunz class Subclass 7/ClassVII  

7/Cl Hydrous phosphates without additional anion 7/Dl Hydrous phosphates with additional anions 

8/Al Nesosilicates (i.e., isolated tetrahedrons) [SiOJ 8/Bl Nesosubsilicates with tetrahedron s additional anion 8/Cl SorosiUcates (i.e., paired tetrahedrons) [Si O ] 

9/Al Salts of organic acids 9/Bl Hydrocarbon without nitrogen 9/Cl Resins and waxes compounds 9/Dl Hydrocarbons with nitrogen 

The s)Tstematic classification of minerals according to the American Chemist and Mineralogist James Dwight Dana was the first to be established in 1837 using the Linnaen principles of taxonomy modified by Friedrich Mohs and the Berzelius system for the notation of chemical formulae. Since 1837, it was modernized to take into account recent discoveries. 

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