326 Elements of Mineralogy. 



texture fibrous, cuneiform, folid, or lamel- 

 lar ; this laft is fometimes called antlmonial 

 galena ; its form generally indeterminate, 

 but fometimes cryftalized; it is'^the moft 

 fufible of all ores; its fpecific gravity is from 4 

 to 4,2, and when melted 4,7 or 5,000 ; it ful- 

 lies the fingers, and is very brittle ; when gra- 

 dually heated in a crucible it lofes about 22 per 

 cent, of its weight, and becomes a grey calx ; 

 it is perfectly foluble in the marine acid with 

 the affiftance of heat ; the nitrous only cal- 

 cines the reguline part, and the vitriolic has 

 but little effect on it; 100 parts of it contain 

 74 of regulus flightly dephlogifticated, and 

 #6 of fujphur, 3 Bergm. 167. 



6. It is analyfed by folution in aqua regia, 

 confiftjng of * part nitrous, and 4 of marine 

 acid ; the fulphur is found on the filter. 



7. In the dry way antimony is feparated 

 from the ftony parts of its ore by diftillation 

 fer defcenfum ; it is afterwards reduced to a 

 regulus by gently roafting it untill it lofes 

 22,5 per cent, of its weight, and then mix- 

 ing the grey calx thus formed with twice its 

 weight of black flux, and brifkly fufing it 

 In a covered crucible. 



SPECIES IV, 



