Goethita

structure of goethite FeOOH. Isostructural with diaspore AlOOH. Brown octahedra are Fe3+ Pink protons stick into the double-vacant rows Made with the CrystalMaker code

Recogiendo goethitas en Tharsis.

GOETHITAS

Recogiendo goethitas.

Cogiendo goethitas en Tharsis

Goethitas en la corta de La Lapilla.

Rutile consists of edge-sharing single chains of octahedra (contrast with the double chains in goethite). SiO2 adopts the rutile structure at sufficiently high pressure as the relatively compressible oxide ions are squeezed down in volume such that the radius ratio between Si and O is favorable for octahedral coordination Made with the CrystalMaker code

GOETHITAS

New Spanish Goethites, video made by Jordi Fabre (Fabre Minerals)