Very classic Pyromorphite from the famous Roughton Gill Mine (Barstow's Trench), Caldbeck Fells, Cumbria. Excellent crystals of Pyromorphite measuring to 1.1cm are abundantly inter grown over a typical hacked Quartz matrix. Crystals of Pyromorphite are lustrous with a yellow slightly green colouration. A neat specimen from the mine, once in the Lindsay Greenbank collection.