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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.

Tags: Tridymite

  • Next 9011 JP2991 Powellite, Dundee, Gough Co., New South Wales
  • Previous 7231 JL1610 Chrysocolla, Gypsum, Trafalgar Mine (Mount Oscar Mine), Cloncurry, Cloncurry Shire, Queensland
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
Europe Italy

5553 Topaz, Opal, Conca Cannas quarry, Masullas, Sardinia, Italy

  • March 23, 2018
Australasia New Zealand

5054 Titanite, Hematite, Phlogopite, Tridymite, Henderson’s Quarry, Mt Ngongathaha, Rotorua, New Zealand

  • September 29, 2019

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