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Chances are, at different points of the day, you're standing right on top of buried treasure. That's because deep beneath the Earth's surface, valuable rocks, minerals and gemstones are being formed. "Minerals & Gemstones" is an accessible and informative reference guide to more than 300 of the Earth's natural treasures, from simple sandstones to coveted lapis lazuli, jade, and diamonds. Learn what the Earth is made of, how its rocks were formed, and how minerals and gems are used today. Organized by internationally recognized classification groups, each entry includes a detailed color photograph and a key information table including specifications such as its luster, transparency, specific gravity, hardness, crystal habits, and associated minerals. Pocket-sized guide is convenient for fieldwork and school.
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Minerals and Gemstones, David C. Cook, Wendy L. Kirk
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- Pubblicato
- 2008
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- (In brossura)
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