|Cashel Rock, near Creggan||Tyrone|
|Cashel Rock, near Creggan, Co.Tyrone, June 1997|
|Site Type: ||Inland exposure|
|Site Status: ||PASSI|
|Grid Reference: ||D25893801|
|Rock Age: ||Ordovician|
|Rock Name: ||Tyrone Volcanic Group|
|Rock Type: ||Breccia, Rhyolite|
|Minerals: ||Chalcopyrite, Galena, Pyrite, Sphalerite, Covellite|
|Other interest: ||mineral vein, stockwork, No Data|
Summary of site:
This is an area of small outcrops of a mineralised breccia in Ordovician volcanic rocks. Sulphide minerals, probably galena and zinc blende occur, best seen in loose boulders.
Threats are possible agricultural improvement and, due to the limited occurrence, collecting.