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Mystery of Uruguay's amethyst geodes: New model to explain amethyst formation

ScienceDaily
Summary
Nutrition label

77% Informative

Geodes are hollow rock formations often with quartz crystals, such as amethyst, inside.

They date from the original breakup of the supercontinent Gondwana around 134 million years ago .

Amethyst geodes in Uruguay have been found in cooled lava flows.

Formation of these geodes has remained a mystery.

Researchers propose new model to explain their formation.

VR Score

86

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95

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4

Article tone

formal

Language

English

Language complexity

74

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not offensive

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not hateful

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Time-value

long-living

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