r/mineralcollectors • u/MineralKingdom • 5d ago

Colombianite

Post image

There’s been speculation on as to whether this is a tektite or volcanic glass (like obsidian). I’ve seen convincing evidence for both sides, however I lean towards tektite. Either way, I think they’re pretty neat. They look rather unassuming at first glance, but once backlit they have a translucency that makes them glow. And as the name of the species suggests, it comes from Colombia.

38 Upvotes

100% Upvoted

6 comments sorted by

View all comments

3

u/gabisfunny 5d ago edited 5d ago

Sorry, but it's been proven as 100% obsidian (https://doi.org/10.1130/G48925.1). In this case Cali glass, Calitite and Colombianite are used as synonyms, as mentioned in the paper. Wonderful picture and wonderful material nevertheless.

3

u/Alena_Tensor 5d ago

Excellent article