Dims: 2.4x2.1x2.0" (6.2x5.3x5.2 cm)
Wt: 3.6 oz. (101.6g)
Linopolis, Minas Gerais, Brazil
This hand specimen consists of dozens of small pale brown herderite crystals and two large muscovite books on an albite base. The herderite crystals are complex, showing many different shapes including prismatic with domal terminations. They appear transparent, although this is spoiled by many internal fractures. Close examination indicates that the herderite crystals are very pale yellow to colorless, and the pale brown color is from a brown cryst that lightly coats some crystals and crevices.