ARSENICUM (arſenic), mineralized by ſulphur and iron. Pyritical.
Cronstedt Min. § 243. A. Pyrites arſenicalis.
COBALTUM,
OR
COBALT.
Its ſpecific gravity is 7,700. Nitrous acid and aqua regia readily diſſolve it. The vitriolic acid requires to be boiled nearly to dryneſs. The muriatic and acetous acids do not act upon it unleſs previouſly calcined. 270 expreſſes the quantity of ſaturating phlogiſton, which it retains with the ſame force that iron does. Common regulus melts in the ſame heat that copper does, but when well purified it is hardly eaſier to melt than iron.
COBALTUM nativum (cobalt), native and united to arſenic. Native.
Cronstedt Min. § 249.
COBALTUM calciforme (cobalt). Calciform.