Agate Bookends, Brazil

Name: Houston Museum of Natural Science Agate Bookends, Brazil - Agate Bookends, Brazil
Brand: Houston Museum of Natural Science
SKU: 46357909405916
Price: 50.0 USD
Availability: InStock

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Description

Agate forms in the nodule cavities of volcanic rock when silica-rich fluids seep through the volcanic material. Similar to geodes, layers of chalcedony and quartz are built up within the cavity over time, different minerals and concentratio...