Abstract:Rock forming blue quartz occurrences are reported on all continents, but little is known about the specific causes for the coloration, and even less about its geological significance. The present study investigates the occurrence hosted by the metarhyolites of the Rio dos Remédios Group in order to determine the potential causes of the blue coloration and gain insight into the geological significance of the occurrence in the wider context of Brazilian geology. The optical observations have shown that the blue … Show more
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