irregular huge Rizalithe / Bikolite Tektite. Found in Paracale Area, Bicol Region, Camarines Norte, Philippines. Typical Bikolie with deep U-grooves. Tektites are natural glass, generated by a huge meteorite impact. By hitting the ground the kinetic energy from the meteorite was set free in a huge explosion, that vaporised the meteorite and the surrounding earth surface. Jets of rock steam were ejected from the new born crater. The steam jets cooled down in the higher atmosphere and condensed to glass that rained down up to hundreds of kilometres away from the impact. silky gleam and aesthetic sculptured 457g - 99 x 72 x 58 mm one small chip, please see last picture International meteorite collector association member number #3503