Clifton College Scientific Society. 



63 



SILICATES— Cb«/waerf. 



No. 



121 



lU 

 126 



128 



132 



134 



145 



144 

 142 

 147 

 (24) 

 133 



135 { 



137 



163 } 



362 



366 

 369 



376 I 



378 

 381 

 385 



370 I 



360 I 



382 I 



419 

 420 

 444 I 



422 { 



NOTE- 



Garnet (Almandine 

 or precious Garnet 



Do.iiiRhombic Dode- 



cahedra (1) 

 Do. with Felspar 

 Do. Dodecaliedra, 



with planes P, k, i, 



with Calcite (5) . . 

 Do. (Colophonite ) 



with Calcite and 



Coccolite . . 

 Do. in Mica-slate 

 Idocrase (Vesmian). 



Faces: M small, d,e, 

 P, al, a2, a3, c . . 



Do. with Calcite.. 



Alloehroite, massive . . 



Do. in minute Dode- i 



caliedra \ 



Epidote,largeobHque ) 

 Prisms, with dark \ 

 Hornblende . . ) 



Felspar (Orthoclase) . . 



FoKMULA. 



Locality. 



3*EO,2 Si02 + E, t ' 



Oa Si02 

 *R=Fe, Ca, MgMn i 

 tIl=AI, Fe, Cr 



Do. in Claystone | 

 Porphyry . . . . j 



Do. Red, with Quartz 



Do. compact 



Do. with Slica, black V 

 Quartz, and white ( 

 crystals of Cleve- ( 

 landite . . . . ) 



Do. Adularia: Moon- ) 

 stone 



Do. Decomposed : 

 Porcelain Clay . . 



Labradorite 



Saussurite : probably i 

 impure Labradorite / 



Albite. W.th Quartz 1 

 and Mica . . ( 



3 (Ca, Mn, Fe) 0, ^ 

 2 SiO, + 2 R2 ^ 

 O3, SiOs 

 *E=Fe, Al, Mn 

 I KO,3Si02-f-Al, O3 

 I 3 Si02 



CaO, SiOo -f Alo 

 O3, 2 Si02 



3 CaO, 2 Si02 + ) 

 AI2 O3, SiQ2 I 



NaO, 3 SiO, -f Al, 

 . . 0.,, 3 biOo ' S ! 



■The Numbers in the second column refer to the K-mes in 



Greenland 



Grisons, Switzerland 

 Spain 



North America 



Scotland 



Vesuvius 



Eiver WUui, Siberia 

 Monte Monzoni, Tyrol 

 Tellemarken, Nonvay 



Norway 

 Okehampton 



Arendal, Norway 



Tyrol 



Mourne Mts. Ct. Down 



St. Agnes, Cornwall 



Spain 



Bohemia 



Braid Hills, Ediuburgh 



Moiu-ne Mts. 



Ceylon 



Cornwall 



Labrador 

 Artndal, Norway 

 Cornwall 



Killiney, Co. Dublin 

 PliillilJS' Jlineialogy. 



