20055 Tridymite, Spring Hill, Macedon Ranges, Victoria May 26, 2020 Steve Australasia Australia Victoria Pale greenish rounded pseudohexagonal twins of tridymite with goethite(?). Oxidation due to the breakdown of either ilmenite or magnetite. You can see the hexagonal outline of the tridymite here and there.
Australasia New Zealand ncat JP0247 Fayalite, Tridymite, Hendersons Quarry, Mount Ngongotaha, Rotorua District, Bay of Plenty Region (Te Moana-a-Toi), North Island, New Zealand October 8, 2019
Europe Germany 7102 Tridymite, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany October 5, 2019
Australasia New Zealand 5054 Titanite, Hematite, Phlogopite, Tridymite, Henderson’s Quarry, Mt Ngongathaha, Rotorua, New Zealand September 29, 2019