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Line 1: − The way a [[mineral]] '''fractures''' can sometimes help to identify it. Most fractures can be described by the following terms:+ − <table><tr><td>''Uneven''<td>Rough or irregular surface</td></tr>+ − <tr><td>''Conchoidal''<td>"Shell-like," with a smooth curved surface.</td></tr>+ − <tr><td>''Hackly''<td>Sharp, jagged surfaces like broken metal.</td></tr>+ − <tr><td>''Splintery''<td>Forming elongated splinters (applies to fibrous minerals).</td></tr>+ − <tr><td>''Earthy''<td>Breaking like [[clay]] or [[chalk]].</td></tr></table> Chesterman, p. 32+ − =Sources=+ − *Chesterman, Charles W. ''The Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf: New York (1987)+ − + + + +
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A '''fracture''' is a break, usually in a [[bone]]. If the broken bone punctures the skin, it is called an open or compound fracture. Fractures commonly happen because of car accidents, falls or sports injuries. Another cause is [[osteoporosis]], which causes weakening of the bones. Overuse can cause stress fractures, which are very small cracks in the bone.
Symptoms of a fracture are
* Out-of-place or misshapen limb or joint
* Swelling, bruising or bleeding
* Intense pain
* Numbness and tingling
* Limited mobility or inability to move a limb
[[category:geology]]
If you have a fracture, you may need to wear a cast or splint. Sometimes you need surgery to put in plates, pins or screws to keep the bone in place.
[[Category:Medicine]]