Gartheiniog quarry
| Location | |
|---|---|
Location in Gwynedd  | |
| Location | near Aberangell | 
| County | Merioneth (now Gwynedd) | 
| Country | Wales, UK | 
| Coordinates | 52°41′14″N 3°44′39″W / 52.687325032727585°N 3.744051095709508°W grid reference SH 768 102  | 
| Production | |
| Products | Slate | 
| Type | Quarry | 
| History | |
| Opened | 1880 | 
| Active | 1881–1917 1920–1937  | 
| Closed | October 1937 | 
Gartheiniog quarry was a slate quarry served by the Hendre Ddu Tramway. It is located about a mile west of Aberangell in Merioneth (now Gwynedd), North Wales near the confluence of the Nant Maesygamfa and the Afon Angell. It worked the Narrow Vein, the highest-quality slate vein in the Abercorris Group.