[Natura] - nature
   crystal-kingdom
     minerals constituting rocks
       Quartz, and Silicates containing alumina, without water
         01.1 quartz [SiO2] [U.R. von Kalbe], [1505?]
         01.2 opal [SiO2.nH2O]
         02 feldspar
         03 mica
         04.1 garnet
         04.2 idocrase
         05 leucite Werner ex Blumenbachs, 1791
         06 epidote [Ca2Fe+3Al2Si3O12(OH)]
         07 scapolite
         08 andalusite
         09 staurotide
         10.1 kyanite
         10.2 sillimanite
         11 tourmaline
         12.1 topaz
         12.2 beryl