- Material:
- Schist
- Category:
- Metamorphic
- Colour:
- Greenish grey
- Grain/Crystal Size:
- Medium
- Place of origin:
- Donegal, Ireland
- Rock Unit Name:
- Lough Foyle Succession (Undifferentiated)
- Geological Age:
- Precambrian, Dalradian
- GSI Rock Unit Code:
- LFS
- Context of Use:
- Rubble stonework.
- Related Material (same rock unit):
- Glentown Slate
Notes:
'Greenish grey in colour with obvious schistose partings. Used for rubble stonework on many buildings in the County Londonderry area. It tends to weather along partings and preferentially deteriorates in the presence of cement mortar.' (Natural Stone Database NI).References
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