Kinahan — The Economic Geology of Ireland. 345 



sized tracts of Carboniferous Sandstone ; while it seems probable 

 that a third, but smaller one, exists further north, to the west of 

 Ardara, as the breccia and conglomerate in places on the shore of 

 Loughrosbeg Bay are similar to the basal Carboniferous conglo- 

 merate of other places. 



Mines and Minerals. 



Gold. — Slieve-an-Orra, Co. Antrim. — It now appears that the 

 tradition of gold being found here was due to a promoter of the 

 Antrim Mining Co. having made the statement, on the supposition, 

 that orra signified aurutn. 



Silver. — Camaderry, Glendalough Lead Mines, Co. Wicklow. 

 Associated with the lead of this lode were found some handsome 

 sprays of native silver ; also the peculiar form of calcite, called 

 Schiefer Spar. 



Silver Copper. ^Silver in the west of Cork seems to occur as 

 often in tetrahedrite as in chalcopyrite. 



Silver Lead. — Clonmines and Barretstown, Bannow Bay, Co. 

 Wexford. Fraser, in his Statistical History, states that the Danes 

 had a mint at Clonmines. From Mr. George Griffith's " Chro- 

 nicles of the Co. Wexford" we learn that there was a mint at Clon- 

 mines in the reigns of Henry VIII., Edward VI., Mary, and 

 Elizabeth. The first record quoted refers to Clonmines Silver Mines, 

 in July, 1550 (King Edward's reign), and others refer to it and 

 Barretstown up to 1565 (Elizabeth's reign). During this time the 

 mines appear to have been worked on and off under different agents. 

 In 1552 they were worked by Almains, or Dutch miners, under 

 Joachin Grunderfilgen ; while, in 1565, the agent was one Walter 

 Pepparde ; but on account of the " constant quarrelling going on 

 between persons trying to get the mines into their power they 

 ceased to be worked for many years." The Clonmines mine seems 

 to have been extensive, yet there is now no record of its site. 

 Barretstown was reopened about the year 1840 ; but, as already 

 mentioned, it was not a success. Other mines, worked by the 

 English in the sixteenth century, were near Enniscorthy. 



Iron— Manganese. — Calliagh and Tattin Heive, Co. Monaghan, 

 S. S. W. of Eossmore Park. According to Adeney, this contains 

 35 to 50 per cent, of iron, and about 7 per cent, of manganese. The 



