underthescopemineral: Chalcophyllite Cu18Al2(AsO4)4(SO4)3(OH)24·36H2O Locality:Madonna di Fucinaia (Madonna della Fucinaia) slag heaps, Campiglia Marittima, Campigliese, Livorno Province, Tuscany, Italy 1.31 mm group of Chalcophyllite crystals. Photo
