Layers of chromite
Part of Hall of Planet Earth.
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Part of Hall of Planet Earth.
Chromite is usually one of the first minerals to crystallize in basaltic magma, and is thus commonly found as a layer near the bottom of magma chambers. In this sample, the black, once-flat chromite layer deformed, probably while the rock was still partially molten.
Provided by Stillwater Mining Company,
Nye, Montana