Colombianite - Tektite from Colombia Rare & Systematic minerals and the period in which

and the period in which the mineral-bearing layer was even accessible ended after just two years

Was die Geschmolzenen und vermengten Minerale sofortig erkalten ließ -> der einzige Moment der Erdgeschichte an dem der Hauyn in echter Edelsteinqualität entstehen konnte

Ex-Sammlung Gerd Seggelke

Kasachstan

Colombianite - Tektite from Colombia Rare & Systematic minerals and the period in whichGrayishbrown, elliptically shaped, translucent colombianite with several bubbles and craters on its surface. Colombianite, also known as Cali glass and Piedra Rayo, is a pseudotektite created during volcanic eruptions as lava is catapulted and cools to glass. The piece has been backlit in some photos to show its translucency. Size: 2. 8 x 2. 0 x 0. 7 cm Locality: Cauca, Colombia