NASA announced this week that rocks made of pure sulfur have been discovered on the Red Planet. The yellow sulfur crystals in a pure ... area was likely formed by large floods of water and debris ...

The “bricks” can be cubes or more complex shapes. Most rock shops sell mineral crystals that occur in nature. One is pyrite, which is known as fool’s gold because it looks like real gold.

Mayor Adams said that the Big Apple is littered ... Eric Adams is all in on healing crystals. He wears a band of them on his wrist often. Corbis via Getty Images The “Rock Center” Adams ...

Hundreds of fragments of a rare transparent type of quartz called "rock crystal" suggest Neolithic ... to Dorstone Hill in the form of large crystals up to 4 inches (10 centimeters) long, possibly ...

As it turns out, certain crystals really can help us forecast volcanic eruptions. These crystals are produced in molten rock as it travels ... plagioclase can be as large as a square of chocolate ...

The energy from the impact of the Mars-size object hitting Earth melted the rock that would eventually form the moon’s surface. “When the surface was molten like that, zircon crystals couldn ...