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geodeRoughly spherical, hollow or partially hollow accumulation of mineral matter. A few centimeters to nearly 0.5 m in diameter. Outer layer of chalcedony lined with crystals that project toward the hollow center. Crystals, often perfectly formed, usually quartz although calcite and dolomite and – more rarely – other minerals. Most commonly occur in li [..]
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geoderounded stone with a hollow center lined with crystals, 1670s (in Greek form from 1610s), from French géode, from Latin geodes, name of a certain precious stone, from Greek geodes "earthy, earth- [..]
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geodeHollow rock, often of igneous origin, that is filled or partially filled with crystals.
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geode(n) (mineralogy) a hollow rock or nodule with the cavity usually lined with crystals
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geodeThe European Group of Energy Distribution Companies & Organisations GIGG
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geodeA hollow nodule or concretion, the cavity of which is commonly lined with crystals.
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geodeHollow rock that is filled or partially filled with crystals.
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geodeA hollow, generally spherical-shaped cavity in solid rock that is partially filled with secondary crystals or minerals.
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