770 



Griinerite. 

 Richterite. 

 Edenite. 

 Pargasite. 

 Hornblende. 

 Croculolite. 

 Glancophaue. 

 Riebeckite. 

 Arfvoilsonite. 

 Barkevikite. 



^nigmatite. 

 Cossyrite. 



Leucite. 



Pollucite. 



Hyalotekite. 



Beryl. 



Cesium Beryl. 



Emerald. 



Rosterite. 



Leucophanite. 

 Meliphanite. 



lolite. 



Cerasite. 



Fablunite. 



Auralite. 



Cbloropbyllite. 



Asiiasiolite. 



Pyrargillite. 



Gigantolite, etc. 



Ransiitite. 



Rowlaudite. 

 Yttrialite. 

 Thal^nite. 



REPORT OF NATIONAL MUSEUM, 1897. 

 (i. Mouoclinic section — Continued. 



FeSiO,. 

 [(K,Na),Mg,Ca,Mn]SiO.,. 



Chiefly Ca(Mg,Fe).)(SiO:,)^, with 

 NajAl-CSiO:,), and (Mg,Fe)., (Al,Fe)4Si,0,,. 



NaFe,(Si03):!. 



NaAl(Mg,Fe,Ca):(8iO;0.,. 



NaFe(Fe,Mg,Ca):(SiO:,) .. 



Na4Al(Al,Fe)(Fe,Mg,Ca):,Si,0i:. 



y. Triclinic section. 

 (Na,K)8NaiAl,Fe,(Fe,Mn.MgCa) («i/ri) 48180,6. 



(Iroup i. 



(K,Na)Al(Si03).> 



Group 5. 



H.2(C8,Na).2Al(Si03)6. 



Group 6. 



R.B,(SiO:0n. 

 R=;Pb,Ba,Ca; also contains Gl,F,K,etc. 



Group 7. 



Gl3Al2(S103)6. 



Group 8. 



NaCa(GlF)(Si0.i)2. 

 GlNaCa^GlFSiyOio. 



Group 9. 

 Al6Mg4(A10H).2(Si,Or)5. 



Alteration products of lolite. 



Group 10. 



(Fe,Al)4(Mn,Ca,Mg)3(Si207)a. 



Group 11. 



(Fe,MgKY,Ce,La)a(YF).2(SUOr)2. 



Isometric at 500*^ C. 



l8ometrit\ 



Hexagonal. 



Orthorbombic. 

 Tetragonal. 



Ortborbombic. 



iBometric. 



Isometric (?) 



