Observa- 
2^84 FROM BUKOREST, 
CHAP, copper (malachite), for which he asked four 
^ -' ' ducats. He had also a few of the ores of sold, 
from the Boitza mines ; and particularly that 
extraordinary and rare association of the native 
gold with crystallized sulphuret of antimony, 
hitherto peculiar to the mines in the neighbour- 
hood of this place. The mountains oi Boitza are 
connected with a chain that stretches on both 
sides of the river Maros, the Marisus of Strabo. 
Geological From this place, as far as Deva, they consist 
of Syenite porphyry, (the saxum metalliferum of 
BoT7i\) covered with limestone, slate, or sand. 
The principal mine of Boitza is worked in a 
variety of the Syenite porphyry, differing from the 
common variety,* in having large pieces of feld- 
spar scattered through its substance. The 
uppermost gallery, when Baron Born visited 
these mines', was excavated in limestone, which 
is superincumbent on the porphyry; but the 
(1) A7r^^)a?^ calls the metalliferous stone o£ Bern, " Clay Parphyry " 
and desciibes it as indurated clay, containing hornblende, feldspar, micoi 
and quartz. Its colour, he says, is generally some shade oi green, mostly 
dark, even inclining to black. 
(2) See " Travels through the Bannut of Teincswar, Transylvania, 
and Hungary," described in a Series of Letters to Professor Ferber, and 
published by li. E. Raspe, Letter 13. p. 127. Loud, nil: a work full 
of valuable information, as it relates to nimei the least known; and the 
intelligeace is derived from the personal observations of the best minera- 
logist of his age. 
