$850.00 €695 £600.00 approx. This specimen is priced in US dollars, all other prices are approximate.
A rich botryoidal with a velvet lustred surface of Cornwallite lines a deep cavity in a white Quartz. Also on the white Quartz is a grey mixture of undefined Sulphides with some 'Limonite', from the Mammoth Mine, Utah, USA.