A break in the acetabulumâthe socket located on each side of the pelvisâis less common than other types of pelvic or hip fractures. It usually occurs as the result of a car accident or fall from a significant height, with damage to other bones and soft structures in and around the hip and pelvis.
The first and most basic characteristic of all minerals is that they occur naturally. Minerals are not made or influenced by human activity. However, some minerals, such as diamonds, can be manufactured by humans.
A mineral is a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition. It must have all five of these characteristics to be a mineral. The mineral cannot form from materials that were once part of a living thing. Minerals are always solid, with a definite volume and shape.