A super specimen of Liroconite with Clinoclase from the best location for the two rare copper arsenate species. Many of the specimens that came from what is probably Cornwall's most famous mine, were mined in the mid to late 18th Century. This specimen has the major display area lined with rich turquoise blue wedge shaped crystals of Liroconite to 0.5cm on edge, with rare deep blue crystal groups of lustrous Clinoclase. There are also other Liroconite crystal lined cavities on the specimen. A fine classic mineral specimen from the Cornish mine.