Trolleite is named after the Norwegian geologist Hans Trolle, who discovered the mineral in 1899. It is found in various locations around...

Origins of Midnight Lace Obsidian Midnight lace obsidian is a unique type of obsidian that is highly prized for its striking black color...

Obsidian is a naturally occurring glass-like material. The process of obsidian formation is fascinating, and understanding it can help us...