Mexican Aragonite Amber between 144 to 65 million

between 144 to 65 million years ago

Steneosaurus bollensis

distinctive head crest the Pteranodon was a giant

also referred to as Ruby in Kyanite

Mexican Aragonite Amber between 144 to 65 millionApprox. dimensions: 6. 5" x 5" x 2. 5" Aragonite is a common carbonate mineral. It is unfortunately often thought of as the poor cousin to calcite. But aragonite is an interesting and attractive mineral in its own right. It forms interesting habits and can have a soft pretty color. Its modes of formation and relationship to calcite are both curious and intriguing. Aragonite is a polymorph of calcite, which means that it has the same chemistry as