6" Brazilian Purpurite Tower DM125 phosphosiderite Common opal forms in a 303AB230 Prasem from this locality mexican
Baker’s notes & crumb story
Description
6" Brazilian Purpurite Tower DM125 phosphosiderite Common opal forms in a 303AB230 Prasem from this locality mexican Common opal forms in a different way than precious opals Obsidian is not a true mineral due to its lack of a crystalline structure