GeoPicture of the week: a magnificent tourmaline slice
Visually, tourmaline is one of the most spectacular minerals - it can appear in a myriad of colors and gradients, ...
Visually, tourmaline is one of the most spectacular minerals - it can appear in a myriad of colors and gradients, ...
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© 2007-2023 ZME Science - Not exactly rocket science. All Rights Reserved.