Museum Herderite Crystal from Brazil - 348 Grams - 4.0"

This is a fantastic and large grayish purple Herderite crystals on Mica and Albite matrix from Brazil. There are 3 crystals, the largest measuring 8cm long and is in perfect condition.
Location: Fazenda Jaime Pacheco, Linopolis, Minas Gerais, Brazil Size: 10.0 x 8.7 x 6.3 Centimeters Weight: 348 Grams