126 The Hartz. 



The central ivories at Ocker. Frau Marien Sarger Hutte. 



These works are situated at the mouth of the interesting valley of 

 Ocker on the horizontal limestone of tertiary formation. They pre- 

 sent themselves in a very imposing manner in consequence of the 

 clouds of smoke that cover the little village, and the immense heaps 

 of black scoria, which form the banks of the torrent that takes its 

 rise near Altenau. This stream contains rolled scoria coming from the 

 ancient workings near that place ; they are collected and re-smelted 

 with advantage, and contain upwards of fifteen per hundred of metal. 



The series of operations here practised is among the most com- 

 plicated in the world, caused by the nature of the ore from the Ra- 

 raelsberg. The operations are separated into two vast series founded 

 upon the treatment of the two distinct classes of ore. The one is 

 composed principally of copper and iron pyrites, the other of galena 

 and blende ; both contain gold, silver, zinc, arsenic and antimony ; 

 the gold is in such small quantities as never to be detected in the 

 assays undertaken for the purpose ; it is concentrated in the silver 

 from which it is separated. 



Production of these ivorks in 1828. — Six hundred and seventy 

 one marks, nine lots of silver not refined (from lead). Three hun- 

 dred and forty marks, thirteen lots (from copper). Two hundred 

 and seventy quintals of litharge for commerce. One thousand six 

 hundred and ninety one quintals, forty and a half pounds of lead 

 from the reduction of litharge. Sixteen quintals thirty two pounds 

 of zinc (from lead). Three quintals and ninety pounds (from cop- 

 per). Three thousand one hundred and eighty one quintals and 

 seventy nine pounds of copper. 



Herzog Julius Hutte. 



These works are large and are situated at the foot of the chain, 

 about two leagues from Goslar. They treat the ores of lead from 

 the Ramelsberg. 



Production in 1828. 

 Silver, not refined, 2,218 marks 11 lots. 



Litharge, for commerce, 3,780 quintals. 

 Lead, " " 2,918 " 85 lbs. 



Zinc, " " 34 " 75 " 



Abstrichs, " " 189 " 65 " 



The department for gold is carried on at the Frau Marien Hutte. 



