Kin ah an — On Irish Metal Mining. 



255 



Localities. 



Eemarks. 



Donegal. 



Gr.alway, 



Mayo. 



44 



56 



£2 



Carrowtrasna. 



Crohy Head. 



Cabra Glebe. 



79 



Gibbstown. 



55 



Kilmeelickin. 



87. 



&c. 



Croagh Patrick Range. 



Zt 



Glaggan. 



"West of Loughakib, Church Hill 

 (Gartan) — Cambrian. — A bed of pyro- 

 phyllyte. Mined for some years pro- 

 fitably, and sold in the market under 

 the trade-name of " steatyte." 



Dungloe — Ordovician^) — Beds of pyro- 

 phyllyte (?) : for some time mined 

 to be used in the manufacture of 

 lubricators. 



S.E. of Churchtown — Ordovician. — 

 Pyrophyllyte bed : seems to have 

 been -worked in old times, but no 

 opening has been made for many 

 years. Adjoining the old working 

 is a heap of peculiar saucer-shaped 

 pieces of slag. 



W.N.W. of Castlefinn — Ordovician. — 

 Pyrophyllyte, or "camstone," has 

 been raised for years ; in old times 

 for architectural purposes, and more 

 recently solely for slabs for furnaces. 

 Camstone veins also occur in the 

 country to the northward, between 

 Castlefinn and Letterkenny, that 

 appear to have been used for farm pur- 

 poses. 



Maumbridge — Ordovician. — Tumblers 

 and fragments of steatyte (?) ; the 

 source not proved. In other places 

 in this county small veins of steatyte 

 are recorded as associated with the 

 ophytes, but no considerable accumu- 

 lation is recorded. 



Westport — Ordovician. — Small accumu- 

 lations and veins of steatyte, asso- 

 ciated with the ophyte that forms 

 the long tract (the largest in Ireland) 

 extending from the jST.W. slopes 

 by Croagh Patrick to eastward of 

 Westpnrt. No large or pure vein, 

 or pocket, is recorded. 



Achill Island — Ordovician. — An irregu- 

 lar bunch, or "pocket-vein," of 

 steatyte. A portion is crystalline 

 and very pure : has been worked to 

 a small extent. 



