222 A SYSTEM Of 



SECT. CCXXXIV. 



2>* Mineralifed Antimony* Antimonium min&ali* 

 fatum. 



I. With flilphur, Antimonium fulphure miner a* 

 li fatum. /.mtimonhim proprie fie diclum. 



This is commonly of a radiated texture^ 

 compofed of long wedge-like flakes or 

 places - 9 it is nearly of a lead colour, and 

 rough to the touch* 



a. Of coarfe fibres. 



b. Of fmall fibres. 



c. Steel-grained, from Saxony and Hun* 

 gary. 



d. Criflallifed, from Hungary. 



i. Of a prifmatical, or of a pointed 

 pyramidal figure, in which laft cir- 

 cumftance the points are concentricaL 

 I have feen a fpecimen of this, in 

 which the criftals were covered with 

 very minute criftals of quartz, except 

 at the extremities, where there was 

 always a little hole : This fpecimen 

 was given for a fios ferri fpar. 



are always able to make tru^ experiments on fmal! pieces of 4 

 native metals, nor is there any neceffity that mineralifed metals 

 ihoulc) always be found along with the native ores of the fame 

 fpecie ; but thi? really happens with this antimony in the mine 

 of Salberg. We ought to be contented with conclusions 

 drawn from experiments, until the fal'acioufnefs of fuch ex- 

 periments is demonftrated : And it were to be wifhed, that all 

 pretended di coveries wire fupported by experiments, and an 

 enumeration of .he phenonr na which happen in them; we 

 fhould then not contradict things, which perhaps may be true, 

 though, for want of this precaution, they feem fcarce credi- 

 ble ; as, for in ft an ce, the njti^e tin, lead, and iron, the zink 

 (par, and an unknown fem> metal in :he mica. 



SECT. 



