[Natura] - nature
   crystal-kingdom
     minerals constituting rocks
       Quartz, and Silicates containing alumina, without water
         feldspar
           1 orthoclase [KAlSi3O8] - potash-feldspar
           2 albite [NaAlSi3O8] - soda-feldspar
           3.1 oligoclase [([NaSi]0.9-0.7[CaAl]0.1-0.3)AlSi2O8]
           3.2 andesine [([NaSi]0.7-0.5[CaAl]0.3-0.5)AlSi2O8]
           4 labradorite - lime-feldspar
           5 anorthite [CaAl2Si2O8]