MINERALOGY. 
tlien called the Moom or flowers of cobalt. 
When cobalt and arfenic are melted toge- 
ther in an open fire, they produce a blue 
flame. 
g. It does not amalgamate with quickfilver by 
any means hitherto known. 
i>. Nor does it mix with bifmuth^ when melted 
with it, without addition of Ibme medium 
to promote their union. 
SECT. CCXLVn. 
The cobalt is mofl: commonly found in the 
earth mixed with iron. 
'A. In form of a calx, Cohaltum calctforme. 
i. With iron without arfenic, Mar Hale ahfqtie 
arfenico. 
n. Loofe or friable, Minera cobalH calci-^ 
formis fulvendenta. Cobalt ochre, Ochra 
cohalti nigra. It is black, and like the 
artificial zaffre. 
1. Indurated, Minera ..cohalti calcif.ormis in- 
durata. Minera cohalti vitrea^ the fchlac- 
ken or flag cobalt. 
This is like wife of a black colour, but 
of a glaflfy texture, and feems to have 
lofi: that fubftance which mineralifed it, 
-by being decayed or weathered. It is 
often confounded with the Scherbenco- 
boit, for it is feldom quite free from ar- 
fenic •, and there may perhaps exifl: a pro- 
greflive feries from the Schlacken kind to 
the Scherbencobolt kind. 
0.4 
S E CT. 
