0119 Tridymite, Tardree Forest Old Quarry, near Antrim Town, Co. Antrim, Northern Ireland September 18, 2019 Steve Co. Antrim Northern Ireland United Kingdom Click for full sized image…
Europe Germany 2256 Cordierite, Mullite, Hematite, Tridymite, Bellerberg, Eifel Mountains, Germany September 22, 2019
Europe Germany 7102 Tridymite, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany October 5, 2019
