m ? ... 



C *57 ] 



antimonial Ore ; antimony combined with iron, 

 arfenic, fulphur, and fometimes filver ; of a lead- 

 grey colour ; cryftallized in (lender prifmatic 

 needles. It is found near Freiberg, in Hungary 

 and Tufcany. 



P. MANGANESE. 



MANGANESE is about 7 times heavier than 

 water ; foluble in marine acid ; the folution ap- 

 pears brown ; by addition of marine acid to man- 

 ganefe, is produced an elaflic fluid or gas, called 

 furoxygenated muriatic gas, or dephlogifticated 

 muriatic acid air. When expofed to "red heat in 

 a clofe veflel, pure air is produced. It is ufually 

 found in the ftate of calx, or combined with oxy- 

 gen. Next to iron and gold, it is the moft fre- 

 quently diffufed metallic fubftance through the 

 earth, and even in vegetables. Soluble in acids, 

 and precipitated in a white powder by alkali. 



a. Native Manganese; found in the ftate of 

 greyifh-white fmall globules, which, on expofure 

 to the atmofphere, fall" to a black powder. 



b. Native Oxyde of Manganese, White oxy* 

 ^dated Manganefe; cryftallized in tetrahedral rhom- 

 boidal prifms ; found in Hungary, Tranfylvania, 

 mixed with filex, and conftitutes the matrix of the 

 auriferous ores. Anal. Oxyde of Manganefe 43. 

 Oxyde of Iron 43. Lead Mica 5. Wedge- 

 wood* 



c. Black 



