For additional meanings of "Rock", please see Rock.

Rock is a naturally-occurring solid substance composed of minerals.

The preindustrial civilization of Barkon IV incorrectly believed that rock was one of the four basic elements of the universe, along with fire, sky and water. Rock was believed to be found in everything in existence, and could be felt in an object's weight and hardness. (TNG: "Thine Own Self")

Jadzia Dax once told Major Kira that she was a champion window breaker and that she was deadly on a dark night with a few rocks. (DS9: "Duet")

Types of rock Edit

• Anthracite
• Chalk
• Igneous rock

External links Edit

• Geology wiki
• Rock at Wikipedia