Hydroxyl-Herderite on Columnar Muscovite
Barra das Salinas, Coronel Murta, Minas Gerais, Brazil
Miniature, 5.7 x 3.1 x 3.0 cm
Two, lustrous, translucent, lilac-colored, crystals of hydroxyl-herderite to 3.0 cm in length are perched on a large, cleaved lepidolite crystal; upon which has has grown a crust of light yellow-green laths of muscovite to .7 cm in length. This really delineates the paragenesis of this specimen and makes for a good talking point. The purple color is striking, set against the columnar muscovites! These are fairly large for the find, as well.