Zinahan— On Irish Metal Mining. 



247 



Counties. 



40 



35 & 



40 



35 



35 



Localities. 



36 



30 & 

 31 



31 



Knocknamohill. 

 Ballinapark. 



Ballymoneen. 



Ballymnrtagh . 



Castle Howard. 

 Cronebane. 

 Connary. 

 Kilmacoo. 



Templelyon. 



Ballycapple. 

 Ballard. 



Remarks. 



South-west Ovoca, or Knocknamo- 

 hill Mines — Metamorphic Ordovi- 

 cian. — Limonite : the backs of copper 

 or sulphur-ore lodes; worked in the 

 17th century, the ore being sent to 

 Chamney's furnaces at Ballynaclash, 

 Shillelagh, &c. 



West Ovoca Mines — Metamorphic 

 Ordovician. — Limonite with copper- 

 staining on the shrinkage fissures, and 

 ochre. The back of the North sulphur 

 lode was not worked till recent years, 

 and iron is at present being raised : 

 of late the ochre has been worked. 



East Ovoca Mines — Metamorphic Ordo- 

 vician. — Limonite and ochre. Worked 

 in late years ; ochre at present being 

 raised and manufactured. The backs 

 of copper and sulphur-ore lodes. 



Eedcross — Metamorphic Ordovician. — 

 Limonite. 



Wicklow — Metamorphic Ordovician. — 

 Limonite, magnetite, chalybeate, and 

 ochre, with manganese : seems to be 

 the back of a copper or sulphur-ore 

 lode. Here there were extensive 

 works in the 17th century, the ore 

 being smelted by Chamney in the 

 Vale of Clara, at Ballynaclash furnace, 

 &c. ; the old mines are still called 

 the " Clash pits." 



MANGANESE. 



[This mineral is very universally distributed, but generally more or less minutely ; it is 

 very often associated with bog-iron-ore, or other iron peroxides. In many cases it is 

 valueless. In this list are only given the localities where it might possibly be worked 

 profitably as a bye-product with the associated minerals.] 



