7102 Tridymite, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany October 5, 2019 Steve Europe Germany ex Joan Lamond Collection
New Mexico North and Central Americas United States 5789 Tridymite, Truth or Consequences, Sierra County, New Mexico, USA July 18, 2022
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
Australasia Australia Victoria ncat JP3283 Tridymite, Aegirine-Augite, Eastern Hill, Mount Anakie, Anakie, City of Greater Geelong, Victoria September 23, 2019
