Andyh2o2's photos with the keyword: formation

Gibeon meteroite sphere, no, it didn't land like that! 90% Iron 8% Nickel 0.4% Cobalt 0.04% Phosphorous Around 4 billion years old according to the age of crystallisation of the iron-nickel. Arrived in Namibia sometime vaguely in prehistory. The silver grey lines are the Widmanstätten pattern, a crystal formation only created by slow cooling over millions of years. This one weighs 20g.