miner a log y. 
SECT. CLXXXIX. 
With fulphurated iron and filver, Plum^? 
him ferro (s? argento fulfhurato mineralifa^ 
tum^ is found, 
a. Fine-grained, 
h. Fine cubical, 
Coarfe cubical. Thefe are found at 
Wellerfilfv^erberget, in Weftmanland. 
When this ore is fcorified, it yields a 
black flag ; whereas the preceding lead 
ores yield a .yellow one, becaufe they 
do not contain any iron. 
SECT. CXC. 
4. Wkh fulphurated antimony and filver. 
Plumbum antimonio y argento fulphurata 
miner alt fat urn. Antimoniated or radiated 
lead ore. This has the colour of Blyglanz^^ 
but is of a radiated texture. 
It is found, 
a. Of fine rays or fibres, and, 
Of coarfe rays or fibres. 
And is got in Maklos Schacht and 
Fierde-Bottn, in the mine of Salberg in 
Weftmanland. The lead in this ore 
prevents any ufe being made of the an« 
ito be denominated and diftingulfhed from one another accord- 
ing to theijr metallic contents. No ore ought, by virtue of 
the moft received notion, to be called Blyfchnveiff but that 
which contains only lead and fulphu]^. The moll: part of thq 
ores called Blyglan% contain filver, even to twenty-four ounces 
per cent, of which we have inttances in the mines of Salberg, 
where it has been obferved that the coarfe cubical lead ores arq 
generally the richeft in liiver, contrary to what is commonly 
taught in books ; the reafon of which may perhaps be, that, 
in making the elfays on thefe two ores, the coarfe cubical can 
be chofen j^uj^eror freer from the rock, than the hne cubical ores. 
dmony 
