MINERALOGY. 
It is found in the duchy of Zweybruck 
or Deuxponts, in Germany. 
b. Indurated, Miner a Mercurii indurata-^ 
jSolid cinnabar. Is of a deep red colour*, 
and, with refpect to its texture, is either, 
1. Steehgrained, from Siebenburgenj 
2. Radiated; 
3. Compofed of fmall cubes, or fcaly, 
from Idria and Hungary ; or 
4. Criflallifed, 
d. In a cubical form; it is tranf- 
parent, and deep red as a ruby, from 
Mufchlanfoerg in Zweybruck 
SECT. CCXIX. 
2. Mineralifed with fulphur and copper, 
curius cupro fulpburato miner alifatus . This 
is blackifh grey, of a glalTy texture, and 
brittle ; crackles and fplits exceflively in 
the fire ; and when the quickfilver and ful- 
phur are evaporated, the copper is difcover- 
ed by its common opaque red colour in 
the glafs of borax, which, v/hen farther 
forced in the fire, or diluted, becomes 
green and tranfparent. It is found at 
Mufchlansberg in Zweybruck. 
SECT. CCXX. 
Observations on Qjj i c k s i l v e r. 
The divifibility of quickfilver in the cold, might 
occafion fome doubt, whether it really deferves to 
be called a metal, if it had not a right to it from 
* It is faid, that there is alfo found in Idria a black cinna- 
bar, that retains its colour in the iubliina:ion, whicli Teems 
to indicate an abundant phlogiilon in the fulphur; but this re- 
quires, however, a farther examination. 
P 
the 
