Blue Celestite Geode | Madagascar fossil Alethopteris grandini is a classic

Alethopteris grandini is a classic and widely recognizable Pennsylvanian-age seed fern (Pteridosperm) commonly found in the Carboniferous coal measures of North America and Europe

fell to the sea floor and solidified in horizontal layers in a process similar to that which forms stalactites in caves

000 years ago

as evidenced by its high-crowned molars (hypsodont teeth) and heavily worn enamel from feeding on tough

Blue Celestite Geode | Madagascar fossil Alethopteris grandini is a classicCelestite geode Specimen measures approx: 3. 25" x 2. 25" x 1. 25" Celestine or celestite is a mineral consisting of strontium sulfate. The mineral is named for its occasional delicate blue color. Celestine and the carbonate mineral strontianite are the principal sources of the element strontium, commonly used in fireworks and in various metal alloys. The light blue color of this mineral will give any space a calming, soft, balanced feel. Celestite