493 



Stylobat, see Gehlenite. 



Succin; Amber. 



Succinite, see Garnet, yellow, granular. 



SULPHURIC ACID. 



SULPHUR. 



crystallised. An octahedron with a rhombic base, 

 P on P' 5 106 20' ; P on P", 143 25'. 



stalactitic. 



amorphous. 



Surturbraud, see Coal. 

 Swaga, see Soda, borate. 

 Sylvan, see Tellurium. 







T 



Tabular spar, see Lime, silicate, 

 TALC. 



crystallised, in hexagonal plates. 



amorphous. 



From the analyses of the different minerals which 

 have been brought together under this name, it 

 appears that several have been included which 

 probably do not belong to the same species. It has 

 been made to comprehend 



Chlorite. 



Potstone. 



Venetian talc. 



French chalk, and other substances. 

 TANTALITE ; Columbite. 



crystallised. A right rectangular prism; T on a plane 

 belonging to mod. class c, 150. It is through the 

 liberality of Mr. Heuland that I am in possession 

 of the crystal which has afforded me the measure- 

 ment here given. 



Yttro-tantalite. 

 black. 



dark brown, 

 yellow. 



Telesie, see Corundum. 

 TELLURIUM ; Sylvan ore. 



native. A regular hexagonal prism; M on a plane 

 belonging to mod. class c, 147 15'. 



auro-argentiferous ; Graphic ore. A right 



rhombic prism ; M on M', about 107 44', as mea- 

 sured by W. P. 



auro-plumbii'crous ; White tellurium. A right 



rhombic prism ; M on M', 105 30'. 



