Attractive Boulangerite specimen with Siderite from Bottino Mine, Tuscany, Italy. It displays very dense cluster of fibrous hair like Boulangerite needles. It has grey-black color and it is very sparkling. Some Siderite lenticular crystals are seen too. For references see the 2018 issue of The Mineralogical Record vol. 49, # 4. In excellent condition. On acrylic base.

Choice piece!