Size- 7cm x 5cm 
 
Gibbsite is not an overly rare mineral worldwide, but crystals of it are rare. A nice sized speciman of reddish brown drusy gibbsite crystals covering matrix. Most of the Gibbsite crystals from Iron Baron were colourless, but these coloured specimans were found in one isolated boulder on a waste dump long after mining had finished in this pit, apart from this one rock, no other specimans this colour were found.