Dims: 5.4 x 4.3 x 2.4" (13.7 x 10.9 x 6.1 cm)
Wt: 2 lbs., 0.5 oz. (923 g)
Minas Gerais, Brazil
Though I am not sure, I believe that this specimen came from the Sao Jose do Safira locality in Minas Gerais. It consists of a thick layer of intergrown Schorl and elbaite crystals that coat a base of albite. These crystals do not exceed 1.7" (4.3 cm) in length, and are in fair condition, as many of them are broken and incomplete. All have good trigonal prismatic forms, with rounded triangular cross-sections. Their edges are well-defined and their faces are striated and clean, possessing a pearly-to-vitreous luster. All have a generally black coloration, though some of the thinner crystals are brown or a dark olive-green. Actually, I really do not know if they are all Schorls or if there are elbaites among them, but I am going according to the fact that while most are completely opaque, some of the crystals are translucent or even dimly transparent. There is a single, flat tabular crystal resting among the Schorls that I am pretty sure is made of quartz, as it formed after the tourmaline and is somewhat translucent and clear. It does resemble the albite base, though, which is of the pseudohexagonal tabular variety known as cleavlandite. The cleavlandite, however, contains many geometrically aligned internal fractures, whereas none are visible in the crystal on top.