Quartz lode in dark Silurian Frongoch shales/mudstones.
A single shaft and spoilheap. No galena visible in the spoil.
External Links
Publications (2)
- Foster-Smith, J.R.; NMRS (1979); British Mining 12 - Mines of Cardiganshire, The; ISBN 0 901450 14 6; pp.29.
- Kennedy, A. E. (2001); Tir Gofal Management Plan: Heritage Management Information (HE1). Cyll Farm, Trefeglwys - E/08/2142