Goethite cast over Barite (?)

Mushroom like growth of Goethtite bladed crystals that reflect a brilliant copper red color sheen with an extremely sharp cavity, bladed in shape, of a previous crystal.  A cast of Goethite over a previous Barite which has been noted in Mindat as an occurence in multiple localities, click on photo to see a couple. This and one other specimen are the only ones like this from Brazil, unique. Better to judge in person, this has a magical sheen as it is rotated.  The tabular void very deep into the Goethite and thin. without even a trace of the crystal that left the cavity.