A sparkling old time specimen of Scorodite from Wheal Unity, St. Day Cornwall. The Scorodite is seen as a lustrous druse richly covering areas of a Gossan/Quartz matrix, with a light blue-grey colour. Crystals of translucent yellow-brown cubic Pharmacosiderite are seen in some cavities and under-lays the Scorodite. An old label on the specimen states that it is 'martial arseniate of copper Huel Unity near St. Day.