Hematite.

Hematite.

Dylife mine, Nr. Staylittle, Central Wales orefield. This rather weighty specimen is obviously a small part of a much larger original formation. There are obvious signs of a radiating construction on the reverse. The surface texture is made of indistinct crystals, possibly the terminations of a radial growth. The specimen is non-magnetic, implying that there is no magnetite present.