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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

4404 Osumilite-(Mg), Hematite, Tridymite, Hendersons Quarry, Mt Ngongotaha, North Island, New Zealand

  • November 15, 2018
Australasia New Zealand

5055 Pseudobrookite, Hematite, Tridymite, Henderson’s Quarry, Mt Ngongathaha, Rotorua, New Zealand

  • September 29, 2019
Europe Germany

7102 Tridymite, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany

  • October 5, 2019
Co. Antrim Northern Ireland United Kingdom

4822 Tridymite, Tardree Mountain, Co. Antrim, Northern Ireland

  • October 5, 2019

Species

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