stackyFACTSGeodes are the geology world's ultimate lesson in not judging a rock by its dull exterior. On the outside, they look like the most boring, lumpy stones imaginable. But smash them open, and you find a hollow cavity lined with stunning, sparkling quartz or amethyst. They are mineralogical treasure chests wrapped in completely drab packaging.
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As if being buried in shattered glass wasn't enough, the fallout eventually decides to become permanent. Over time, thick deposits of compacted volcanic ash…
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Minerals do not just break randomly; they possess cleavage, which is the tendency to consistently break along specific flat planes of structural weakness. Hit…
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In the nineteenth century, Friedrich Mohs decided the best way to classify minerals was to simply make them fight each other. The Mohs hardness scale ranks…
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Sometimes rocks just openly defy basic physics. These weird, twisting subterranean formations grow horizontally or even curl upwards because the water is…
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Take a perfectly good rock, bury it deep underground, and subject it to horrific heat and crushing pressure until it completely changes its identity. That is…
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New Age crystal shops would have you believe quartz is an incredibly rare, mystical artifact. In reality, silicon dioxide is so absurdly common that it makes…
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