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.
Rocks All rocks are formed from minerals. There are 3 main classifications of rocks they are igneous, sedimentary, and metamorphic. These rocks are formed under different conditions and posses certain characteristics.The characteristics a rock has depends upon the condition in which it formed.ther Forms of Sedimentary Rock. Chemical: form from the evaporation and precipitation of dissolved minerals. The precipitation of a mineral forms rocks called evaporates, for example, limestone, rock salt, gypsum, etc.