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The Distribution of Hydrous Impurities in Quartz : The Role of Twinning
Quartz crystals have been studied since ancient times by scientists and natural philosophers attempting to unlock the mysteries behind their aesthetic appearance and cryptic morphological properties. Previous studies ...
Color Variation in Gemmy Amethyst : The Role of Contaminant Diffusion
The role of contaminant diffusion purple quartz, otherwise known as amethyst, is commonly known for its occurrence as clusters of gemmy crystals that grow on the walls of fluid-filled fractures and vugs in hydrothermal ...