A thunder egg is similar to a filled geode and it forms within rhyolitic volcanic ash layers. Rhyolite is very silica-rich, so the mineral composition of thunder eggs usually contain quartz, agate, jasper, chalcedony, etc.#shorts
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A thunder egg is similar to a filled geode and it forms within rhyolitic volcanic ash layers. Rhyolite is very silica-rich, so the mineral composition of thunder eggs usually contain quartz, agate, jasper, chalcedony, etc.
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