362 MINES OF CREMNITZ. 
CHAP, several specimens of the orey which we de- 
-' . tached ourselves from the vein. Like many 
of the Hungarian auriferous ores, it consists of 
clay, quartz, galena, and the oxide of iron, tra- 
versing a porphyritic rock beneath a stratum of 
ite Matrix, slate. To the east of Cremnitz, it is separated 
from Newsohl by a steep mountain of the same 
porphyritic rock, covered with slate. Some years 
ago, the superficies of this 7nine, being too much 
excavated, gave way, and fell into the cavity of 
the mine, leaving an opening, in the form of a 
Yast,^ and frightful crater, like that of Fahlun 
copper-mine in Sweden, where the same accident 
occurred. When we had brought our speci- 
mens of the ore out of the mine, and examined 
them by day-light, we perceived that they all 
consisted of the same substance ; that is to say, 
of auriferous quartz, speckled with minute glit- 
tering particles of aurferoiis pyrites, and pene- 
trated either by a buff-coloured clay, or by an 
argentiferous sulphuret of lead, and the oxide of 
iron. Having visited the interior of this mine, 
Signor Gayio conducted us to the Imperial Mine, 
to view the enormous machinery by which the 
pumps are worked for draining water from the 
mines ; and the ore and rubble raised ; and the 
workmen conveyed up and down. In every 
thing we witnessed, both here and io Tran- 
ItT)i>»rial 
Mine. 
