FLUORAPATITE, Ca5(PO4)3F - Calcium Phosphate Fluoride. Blue/Purple zoned Apatite crystals on matrix. From Golconda Mine, Governa Dor Valadares, Minas Gerais, Brazil. Specimen is 2.5 cm (1") wide by 2 cm (2/4")  high by 1.2 cm (3/8") deep.Crystals are approx. 4 mm wide by 5 mm long (3/16"). Comes with Carlos P. Barbosa lable.