- Siglo Veinte Mine, Llallagua, Bustillos Province, Potosi Department, Bolivia (TYPE LOCALITY)
- Thumbnail, 3.1 x 1.6 x 1.1 cm
- Ex. Philadelphia Academy of Natural Sciences
Metavauxite is the rarest of the related vauxite family members: paravauxite; metavauxite; and vauxite. It is a monoclinic dimorph of the already rare paravauxite, with clearly different crystal habit when seen in person. This is an aesthetic cluster of sharp crystals, from the type locality - surely, given its history in this collection, collected before or close to the time it was being identified as a new species.