Greywacke (Undifferentiated)

Material:
Sandstone
Category:
Siliciclastic, Sedimentary
Colour:
Grey to Black
Grain/Crystal Size:
Fine
Place of origin:
Ireland
Rock Unit Name:
Geological Age:
Silurian

Notes:

A distinctive medium to coarse grained sandstone. It consists of poorly sorted, angular sand to gravel sized particles. It is extremely hard and proves to be a durable building stone.

References

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