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Time's Treasury

Micro-CT; Imaris 3D visualization software

Willy Guenthner

Willy Guenthner Laboratory

Funded by the National Science Foundation
This image shows a piece of jasperoid, a rare type of rock made up of quartz and iron oxide crystallites. The varying colors seen here represent the presence of different elements within the rock; images like this one help researchers track the decay of different components and estimate a sample’s age. That information can help inform the search for useful minerals, the study of ancient environments, and even the understanding of geological events on other planets.