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Smithsonian Gem & Mineral Collection
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| The ancient Sumerians valued large quartz chrystals for making jewelry. Scientists at the Smithsonian recently discovered a mineral -Moganite- in fine-quartz specimens, which may, in turn, lead prospectors to reserves of petroleum and other resources. Smithsonian's National Museum of Natural History. |
| Last modified 2026-08-09 MZ |
Smithsonian photos by Dane A. Penland Copyright 1992 Smithsonian Institution |
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