Fratura (mineralogia): diferenças entre revisões

 

==Terminologia==

====Conchoidal fracture====

'''[[Conchoidal fracture]]''' is a curved breakage that resembles the concentric ripples of a [[mussel]] shell. It often occurs in amorphous or fine-grained minerals such as [[flint]], [[opal]] or [[obsidian]], but may also occur in crystalline minerals such as [[quartz]]. '''Subconchoidal fracture''' is similar to conchoidal fracture, but not as curved.

<br clear="all" />

 

====Earthy fracture====

'''Earthy fracture''' is reminiscent of freshly broken [[soil]]. It is frequently seen in relatively soft, loosely bound minerals, such as [[limonite]], [[kaolinite]] and [[aluminite]].

<br clear="all" />

 

====Hackly fracture====

'''Hackly fracture''' (also known as '''jagged fracture''') is jagged, sharp and uneven. It occurs when metals are torn, and so is often encountered in [[native metal|native metals]] such as [[Native copper|copper]] and [[silver]].

<br clear="all" />

 

====Fratura que se estilhaça====

'''Fratura que se estilhaça''' comprises sharp elongated points. It is particularly seen in fibrous minerals such as [[chrysotile]], but may also occur in non-fibrous minerals such as [[kyanite]].

<br clear="all" />

-->

====Fratura desigual====

'''Fratura desigual''' é auto-descritivo. Ocorre em uma ampla gama de minerais, incluindo [[arsenopirita]], [[Pirita]] e [[magnetita]].

<br clear="all" />

 

==Referências==

 

{{identificação mineral}}

[[it:Frattura (mineralogia)]]

[[no:brudd (mineralogi)]]

[[ru:Излом]]