7173 Mullite, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany October 5, 2019 Steve Europe Germany ex Joan Lamond Collection.
Europe Germany ncat JP1298 Mullite, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany October 11, 2019
Europe Germany 2256 Cordierite, Mullite, Hematite, Tridymite, Bellerberg, Eifel Mountains, Germany September 22, 2019
Scotland United Kingdom 3603 Mullite, Port Na Cloidheig, Loch Scridain, Isle of Mull, Scotland October 3, 2019
