A good specimen from a co-type locality! Minute, yellow-green crystals of stibivanite, an antimony vanadate, in vugs along a white dolomite veinlet in a gray matrix of clinochlore. The Buca della Vena mine was developed in a small magnetite-hematite-pyrite-barite orebody hosted in a metamorphosed dolomitic limestone and is the type locality for several mineral species. Ex. Paulo Matioli collection.