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A geode is a rock that contains a hollow cavity lined with crystals. The heart-shaped geodes feature a white outline of crystals, surrounding a purple middle.
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Geological surveys shed light on the formation mystery of Uruguay's ...
Amethyst geodes in Uruguay have been found in cooled lava flows, which date from the original breakup of the supercontinent Gondwana around 134 million years ago. However, their formation has ...
A geode is a rock that contains a hollow cavity lined with crystals. The heart-shaped geodes feature a white outline of crystals, surrounding a purple middle.
A geode is a rock that contains a hollow cavity lined with crystals. The heart-shaped geodes feature a white outline of crystals, surrounding a purple middle.
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