Columnar Dravite Aggreate
John Betts - Fine Minerals
Cluster of many parallel brown-black columnar Dravite Tourmaline crystals with remnants of Muscovite matrix in some crevices. The Dravite Tourmaline is translucent in the outer layers and has a complex surface texture due to growing against compact mica.
May Downs Station, near Mt. Isa, Queensland, Australia
6.0 x 4.5 x 4.0 cm.