C. Sorby, F.K.S., in which his experience in the microscopical examination of crystals was given. In some of these, dry cells are found ; in "others there are water cavities. Crystals having ...

Deep beneath the Earth’s surface lies a hidden world where nature has spent millions of years crafting spectacular crystal ...

NASA's Curiosity rover has made a groundbreaking discovery on Mars by uncovering pure sulfur crystals within a broken rock.