.122 
A SYSTEM OF 
SECT. CCXXXIV. 
5* Mineralifed Antimony^ Antimonium minefaU- 
fatum, 
I. With fulphur, Antimonium fulphure miner a- 
lifatum. Antimonium proprie fic di^um. 
This is commonly of a radiated texture^ 
compofed of long wedge-like flakes or 
plates ; it is nearly of a lead colour, and 
rough to the touch. 
c. Of coarfe fibres. 
h. Of fmall fibres. 
c. Steel-grained, from Saxony and Hun- 
gary. 
d» Criftallifed, from Hungary. 
1 . Of a prifmatical, or of a pointed 
pyramidal figure, in which lafl; 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 Jios ferri fpar. 
always able to make true experiments on fmall pieces of 
Siative metals, nor is there any necelfity that mineralifed metals 
Ihould always be found along with the native ores of the fame 
fpecies ; but this really happens with this antimony in the mine 
of Salberg. We ought to be contented with conclulions 
drawn from experiments, until the fallacioufnefs of fuch ex- 
periments is demonftrated ; And it were to be wifhed, that all 
pretended difcoveries were fupported by experiments, and an 
enumeration of the phenomena which happen in them ; we 
ihould then not contradict things, which perhaps may be true, 
though, for want of this precaution, they feem fcarce credi- 
ble; as, for in ftance, the native tin, lead, and iron, the zink 
fpar, and an unknown in the mica. 
SECT. 
