Quartz from Pentireglaze Mine, Cornwall

Quartz from Pentireglaze Mine, Polzeath, St Minver, Cornwall, England, UK

Odd little specimen of Quartz from Pentireglaze Mine.

Comes with two labels - one from a former owner and one that we provide with the specimen.

A mixed up piece, this - Quartz crystals on a dark stone matrix. The quartz is often iron stained and I suspect some is a pseudomorph after Calcite.