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Brosso, Piedmont, Italy
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Canavesite, Brosso, Piedmont, Italy. Canavesite is a secondary mineral from the abandoned Brosso mine, known only from this deposit. Specimen measuring 6.5 × 3.5 × 1.5 cm, covered with white tufts of canavesite, a magnesium boro-carbonate, on a matrix of ludwigite