Champagne Pool

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Sarah Weick
KIT, Germany

This colourful spring is located in Wai-O-Tapu Thermal Wonderland, New Zealand. Carbon dioxide causes bubbles in the hot liquid. Minerals in the water as gold, silver, mercury, sulphur, arsenic, thallium and antimony generate the significant colours. For example orange = antimony and green = colloidal sulphur/ ferrous salts.

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