Primary. Trisilicates (feldspars) : albite, oligoclase, andesine, 

 labradorite, anorthite. Metasilicates (amphiholes) : actinolite, 

 hornblende (edenite), {miscellaneous) beryl. Orthosilicates (gar- 

 nets): almandite, rhodolite, (horo-) tourmaline, (oxy-) sillimanite, 

 (hydroxy-) epidote, zoisite, allanite; (inicas) muscovite, damourite, 

 euphyllite, biotite, margarite; (chlorites) corundophilite, etc. 

 Hydrous metasilicates: ehabazite, wellsite. Phosphates: apatite. 

 Oxides: corundum, spinel, diaspore, rutile, brookite, ilmenite, 

 quartz (rare). Sulfides: molybdenite, pyrite. 



Weathering Products. Hydrous silicates: kaolinite, colerainite, 

 vermiculite (jefferisite), etc. Carbonates: aragonite. Hydrous 

 oxides: limonite. 



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