News
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Why Does Prehnite Look Like Green Bubbles? The Geology of Botryoidal Crystals
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Prehnite often looks less like a crystal than a cluster of rain-softened green bubbles. Those rounded surfaces are a record of mineral-rich water, volcanic cavities, and thousands of tiny crystals growing together.
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Why Calcite Grows in So Many Shapes: Dogtooth, Cave Calcite & Crystal Habit
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Dogtooth points, blush cave clusters, glassy rhombohedrons: calcite seems to speak a hundred visual languages. Here is the geology behind its remarkable shapes.
