Pereta Mine, Scansano, Tuscany, Italy - Red globules of ottensite on altered stibnite. Pereta is the first natural (non-slag) locality for this rare antimony oxide, and the specimen is also host to microscopic colorless aggregates (not visible under normal microscopes) of two other rare oxides - brizziite and mopungite.Overall size 4x2.2x1.5 cm