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This is a mineral specimen presentation book for collectors and museums There are 16 chapters with index and introduction Color photographs of the specimens are shown on nearly all the pages Technical details of form, collection location, economic value, availability and aesthetics are presented

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What does it take for a volcanic eruption to really shake the world Did volcanic eruptions extinguish the dinosaurs, or help humans to evolve, only to decimate their populations with a super eruption 73,000 years ago Did they contribute to the ebb and flow of ancient empires, the French Revolution