This vivianite is from the Huanuni Mine in Huanuni, Dalence Province, Oruro Region, Bolivia. This area is the largest cassiterite deposit known. It also contains 61 different mineral species including the phosphate vivianite. It contains the elements A, X, O, and H. This crystal is translucent with a micaceous luster. There is remnant matrix at the base and near the top of the crystal. The crystal measures 2 3/8 x 7/16 x 7/16 inches or 60 x 12 x 11 mm..