Eyselite


Composition: Fe3+Ge4+3O7(OH)
Crystal System : Orthorhombic
Colours: Yellowish-tan, brownish-yellow
Lustre : Vitreous
Specific Gravity : 3.64
Year of Discovery: 2003
IMA Number: 2003-052
IMA Status: Approved
Discovered By: Terry Seward (New Zealand-based chemist and mineralogist)
Named for: Walter Eysel (German crystallographer)
References: Roberts et al. (2004)