Itacolumite Flexible Sandstone Slice 15.5cm x 7.5cm 360gms - Buy Online
Itacolumite Flexible Sandstone Slice 15.5cm x 7.5cm 360gms. 3 sides are rounded and the 4th has a rough edge. See photos. From an old collection recently purchased.
Itacolumite is a naturally sandstones or quartzites that is flexible when cut into slim slices. It was first discovered at Itacolumi, in Minas Gerais, Brazil. Hence its name however, it can be found in other parts of the world. Its flexibility is due to the loose but interlocking grains which make up the rock. The grains were once cemented together but they became separated due to the surface of the grains being dissolved. There are small uniform spaces between the grains which allows them to loosely move.
Although the specimen bends if flexed too much it will break.