Layers of chromite
Part of Hall of Planet Earth.
On Tuesday, October 20, the Museum will close at 3 pm, and the Hall of Ocean Life will be closed all day.
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