Liroconite

A granular, large thumbnail matrix of iron-stained milky Quartz, is richly coated with intergrown blades of cyan-blue Liroconite, the rare copper aluminium arsenate from its type locality at Wheal Gorland in the parish of Gwennap, Cornwall, England.  The flattened crystals are up to about 4 mm wide and where occasionally broken, reveal an opaque, lighter internal hue of deep sky-blue.  A most attractive small Liroconite from Wheal Gorland.