Mineral Specimen #6537 Black Kyanite with Included Graphite ( Vassourinha - Witch's Broom)
Ribeirao da Folha, Minas Novas, Minas Gerais, Brazil
7.4 x 6.4 x 2.4 cm
2.9 x 2.5 x 0.9 in
Two intersecting fans (locally called witch's brooms) of radiating crystals of Kyanite colored dark gray, almost black, with micro inclusions of Graphite. This is a fairly large specimen for this material which was originally marketed as a Amphibole. Most of the crystals are terminated. The faces of crystals have a waxy luster.
Flaws: A few of the terminations are incomplete.
This mineral is also found in the following galleries: Minerals From Brazil | Nesosilicates | Elements | Minerals with Inclusions | Minerals Priced Between 25 and 49 Dollars