PYRITE, SPHALERITE, CALCITE

Brilliant specimen formed by interpenetrated cubic crystals of pyrite, with striated faces (triglyph) showing complex faces in the vertices. The brilliance, as we advanced, is exceptional. On some faces various groups of sphalerite crystals. Accompanied by calcite. The main crystal is: 3,8 x 2,8 x 2,4 cm. Fluorescence UVC & UVA (calcite).