“Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, shiny, on matrix, with very vivid metallic blue iridescent Pyrite coatings. The specimen has been analyzed.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia, Spain
Specimen size: 4.9 × 3.5 × 0.7 cm = 1.93” × 1.38” × 0.28”
Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”
Reference: NJ13AL4 ”
Jordi Fabre - 14th December 2021