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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)
<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)