Originally reported from Brosso Mine, Cálea, Léssolo, Canavese District, Torino Province, Piedmont, Italy. Cobalt-bearing Dolomite: A Co 2+-bearing variety of dolomite. Samples from Příbram, Czech Republic, contain 5.17% CoO. Greinerite: A manganoan variety of dolomite, but probably only a dolomite with a faint manganese content.