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the strict branching of 60° twinning angles has to repeat multiple times to form a repeated hexagonal pattern
Locality: Antioquia Region
Glassy with high clarity
resulting in a “QR Code” effect
Uruguay Amethyst Mixed Shapes AM732 Zimbabwe the strict branching of 60°Locality: Cataln Grande, Artigas Department, Uruguay Dimension: 32x29x10cm Weight: 7. 0kg About 160 million years ago, when tectonic plates were rifting Africa and South America apart as the Atlantic Ocean opened, one of the worlds great flood basalt events was occurring. Basalts flowed from the rift, producing stratified lava flows thousands of feet thick in Brazil and nearby Uruguay. Within these flows, gas bubbles and lava tubes created cavities