CLASSIFICATION OF MINERALS. 



771 



Barysilite. 

 Gaiioinalite. 



Kentrolite. 



Melanotelvite. 



Guariuite. 



Eiulidymite. 

 Epididymite. 



Elpidite. 

 Catai»]e,iito. 



>i'atroii-tatapl<'iite. 

 Eudialyte. 

 Eucolite. 



■ Group i2. 



PbsSi.O,. 

 (Pb,Ca).iSi,07. 



Group IS. 



Pb,(MnO).2Si,07. 



Pbj(FeO)jSi,07. 



(Ca,Na.:,K.:)..[(Al,Fe,Ce)0J,Si,07. 



Group 11. 

 HNaGlSiaOs. 



Group 15. 



HeNJkZrSieOig. 



H,(Na,,Oa)ZrSi:!0„. 



Orthoclase. 



Adularia. 



Sauidine. 

 Soda orthoclase. 

 Hyalophaue. 



Miciocline. 



Aiuazonstone. 

 Auorthoilase. 



Albite. 



r)ligoclase. 



Audcsiue. 



Labrador! te. 



Anortbite. 



Celsian. 



Eucryptite. 



Nephelitf. 



Kaliopbilite. 



Nai:KCa,Fe),;Cl(Zr,Si),05> 



Group 16. The Feldspars. 



a. Monoclinic section. 



KAlSiaOg. 



(K,Na)AlSi;,08. 

 (Ki,Ba)ALSi40,,. 



6. Triclinic section. 

 KAlSi.Os. 



(Na,K)AlSi:,08. 

 The Plagioclases. 

 NaAlSLOg. 



Mixtures of NaAlSiiOs and CaAlj(Si04)i, 



CaAl,(Si04)2. 

 BaAliiC 810^)2. 



Group 17. 



LiAlSiO,. 

 NaAlSiO,. 

 KAlSiO^. 



Cancriuite. 

 Microsommite. 



Davyue. 



Cavolinite. 



Group IS. 



HNa^(AlCO.i)Al.(Si04)3. 

 (Na,K)3Ca[Al(S04.Cl3)]Al2fSi04):, 



Hexagonal. 

 Tetragonal. 



Orthorhonibic. 

 Orthorbombic. 

 Orthorhonibic. 



JMonoclinic. 

 lOrthorhomblc. 



Orthorhonibic. 

 Monoclinic; pseudo- 

 hexagonal. 



Hexagonal; rhombo- 

 hedral. 



Hexagonal. 

 Hexagonal. 

 Hexagonal. 



Hexagonal. 

 Hexagonal. 



