436 



PROCEEDINGS OF THE ACADEMY OF 



I. 2. C. Calcic Pegmatites 



[Aug., 



a. Primary 

 Silicon oxides: 

 Feldspars; orthoclases: 



plagioclases : 

 Metasilicates; pyroxenes: 



amphiboles : 

 Orthosilicates ; garnets : 



scapolites : 

 boro- : 

 micas: 

 rare-earth- : 

 Phosphates; fluo- and chloro- 

 Carbonates : 

 Halides; fluorides: 

 Oxides; 1:2: 



double; spinels: 



rare-earth-: 

 Sulfides ; nonmetallic : 

 metallic; 1:1 

 1:2: 

 Elements; nonmetalhc: 



b. Metamorphosed 

 Sihcates; epidotes: 



hydroxy- : 



c. Weathered 

 Silicon oxides: 

 Oxides; hydroxy-: 

 Silicates; hydroxy-: 



(quartz) 



microcline 



albite, oligoclase, labradorite 



hypersthene; augite 



hornblende 



andradite 



wernerite 



tourmaline 



phlogopite, biotite 



zircon; titanite 



apatite 



calcite 



fluorite 



rutile 



magnetite 



ilmenite 



molybdenite 



pyrrhotite 



pyrite 



graphite 



epidote 



chlorite, kaolinite 



quartz, chalcedony, opal 



limonite 



kaolinite 



I. 3. Hydrothermal Deposits 

 a. Primary 



