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Source volume: 51, issue: 2, PDF page: 30. Label: Figure 14. An opened geode containing pink amethyst and white calcite shortly after extraction at the El Choique mine. Lucas Di Martino photo.
El Choique, Argentina - Patagonian locality famed for pink amethyst geodes in late Cretaceous anhydrite, with quartz and calcite, sought by serious collectors.
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