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bijoux-et-mineraux: “Opal Pineapple” – White Cliffs, NSW, Australia Opal pseudomorph after Ikaite Geology Nerd

bijoux-et-mineraux: Opal Pineapple – White Cliffs, NSW, Australia These pseudomorphs were formed when a mineral crystal of glauberite (or ikalite) was first replaced by calcite and then opalized. They are very rare and only found in White Cliffs, Australia Geology … Continue reading →