434 



PROCEEDINGS OF THE ACADEMY OF 



[Aug., 



sphalerite, galena, pyrrhotite 

 pyrite, arsenopyrite 

 chalcopyrite, bornite, stannite 

 graphite 

 bismuth, gold 



b. Metamorphosed (additional to a) 



Orthosilicates; nephelites: eucryptite 



Sulfides; metallic ; 1 : 1 : 

 1:2: 

 double: 



Elements; nonmetallic: 

 metallic : 



epidotes : 

 misc.: 

 hydrous : 

 Phosphates; hydroxy: 



hydrous : 



Halides; single: 

 double : 



«. Weathered 

 Silicon oxides: 

 OrthosiUcates; hydroxy: 



hydrous : 

 Carbonates; anhydrous: 

 hydrous : 



fluo-: 

 Oxides; hydroxy-: 

 Columbates : 

 Phosphates : 



Sulfates : 



a. Primary 



Silicon oxides: 

 Acid silicates: 



zoisite 



bertrandite 



pyrophyllite 



natrophilite, beryllonite, herder- 



ite, triploidite, hureauhte 

 dickinsonite, fiUowite, fairfieldite, 



reddingite, eosphorite 

 fluellite 

 pachnolite, thomsenolite, proso- 



pite, ralstonite, gearksutite 



opal (hyalite) 



cookeite, chlorite, vermiculite, 



kaolinite 

 montmorillonite, uranophane 

 bismutospherite 

 malachite, bismutite, lanthanite, 



tengerite, uranothallite, liebig- 



ite, voglite 

 bastnasite 



limonite, manganite, gummite 

 rogersite 

 purpurite, phosphuranylite, autun- 



ite, torbernite 

 uranopilite 



I. 2. B. Alkalic Pegmatites 



Feldspars; orthoclases: 

 plagioclases: 

 Metasilicates; leucites: 



(quartz) 



eudidj^nite, epididymite, leuco- 



sphenite, narsarsukite 

 microcline 

 albite, oligoclase 

 leucite 



