SECTION TERMINATED. — ROCKS NEAR MIASK. 
435 
chloritic quartzose schists. At the spot called Listvenaya-gora, or the Larch Hill, 
limestone occurs in a brecciated condition, associated with chlorite schist, and 
pierced by points of greenstone, the upland depressions being filled with local 
detritus from which gold has been extracted. Then follow argillaceous schists, in 
which are auriferous quartzose veins'. The remainder of the section to Mi ask 
exhibits a highly broken series ; a mass of thin-bedded limestone being thrown up 
at one point by a fault against mica schist; at another place, a peculiar garnet 
rock enveloped in serpentine, has been termed by M. Rose “ Dichter or Derben 
granat,” or compact garnet. M. G. Rose has given a woodcut representing this 
rock as being inclosed between w T alls of serpentine \ The serpentine of this spot, 
which, according to that author, contains diallage, appeared to us to act the 
part of an eruptive rock, and to have caught up a mass of grauwacke, which is 
highly mineralized ; in short, the compact garnet rock of Rose, which he has so 
accurately analysed, appeared to us to be nothing more than a crystallized sedi- 
mentary mass. Among the less altered strata which follow are conglomerate 
and grauwacke schist, with an imperfect slaty cleavage, dipping sharp to the east, 
and these are succeeded by greenstone and serpentine, the latter inclosing a mass 
of that peculiar rock the Listvanite of Rose, which, with its flakes of talc and dis- 
seminated iron, may be considered a sort of dolomite. 
Flanked on the west by a valley of argillaceous schist with quartz veins, in which 
the river Miass flows, the tract immediately to the east of the Zavod of Miask is 
chiefly remarkable, in exposing the granitiform ridges constituting the little and 
great Ilmen hills, which inclose a small lake. By the ordinary observer, the chief 
rock on the western flank of these hills would be pronounced gneissose or flag- 
like granite, resembling varieties of which we have previously spoken. In the 
upper and southern suburbs of the Zavod, the rock appeared to us to dip at a 
moderate angle from the side of the hill, and to be affected by regular joints, similar, 
in short, to that which we have mentioned at Kanevsk and Ekaterinburg. Baron 
Humboldt has very clearly pointed out the distinctions between stratified gra- 
nites (of Siberia and South America) and gneiss ; for though the former, often 
sloping down declivities, are regularly stratified, in beds of equable thickness, just 
like those of any sedimentary deposit, the great traveller has convinced himself that 
1 These veins of gold « in situ ” were formerly worked, but have been abandoned ; all the gold now 
produced in the environs of Miask being extracted from superficial detritus (see next Chapter). 
7 Reise, vol. ii. p. 99, 
