CASSITERITE, QUARTZ, PYRITE, SIDERITE

Group of sharp and complex cassiterite crystals, some of them twinned, from this classic Bolivian locality. Excellent brilliance, some transparence and deep brown color, close to black. Accompanied aesthetically by quartz, siderite and minor pyrite crystals.Fluorescence UVC & UVA. THE MAIN CRYSTAL IS: 1,3 x 1,2 x 0,9 cm.