Found all over the world, calcite is the most stable form of calcium carbonate and is the main mineral found in limestone. We find calcite in the ocean, in shells or hard parts of marine organisms ...

When looking at calcite under a microscope, a scientist would immediately recognize the crystalline form of calcium carbonate by its rhombohedral appearance. That is, calcite is shaped like a ...

Roman concrete has defied the passage of time for nearly two millennia. Ports, aqueducts, markets, and entire buildings ...

On this week's episode of Mineral Monday we learn about a mineral that comes in many different crystal formations. On display at The Keck Museum is one of the more rare formations of calcite shown ...

One of the many marvels of the Roman world is that some of its buildings are still with us. But why have they lasted for so ...

Some starfish made of a brittle material fortify themselves with architectural antics. Beneath a starfish’s skin lies a skeleton made of pebbly growths, called ossicles, which mostly consist of the ...

The difference between a lucky find and a real collection comes down to a few ...

Long-term carbonate mineralization helped preserve a 2nd-century Roman concrete sample from Hadrian’s Villa by forming ...

A researcher has firsthand experience with the frustrations of oil production. He spent nine years as a hydraulic fracturing engineer with operating and service companies. A few years ago, he started ...