7102 Tridymite, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany October 5, 2019 Steve Europe Germany ex Joan Lamond Collection
Australasia New Zealand 1520 Edenite, Augite, Tridymite, Henderson’s Quarry, Mt Ngongathaha, Rotarua, New Zealand September 22, 2019
Australasia New Zealand ncat JP1411 Tridymite, K Trig basalt, Poihipi Road, Taupo District, Waikato Region, North Island, New Zealand October 8, 2019
Australasia New Zealand ncat JP0271 Tridymite, Hematite, Phlogopite, Titanite, Hendersons Quarry, Mount Ngongotaha, Rotorua District, Bay of Plenty Region (Te Moana-a-Toi), North Island, New Zealand October 8, 2019
