Break

The break indicates in Minéralogie the aspect of the surface of a mineral which, after being subjected to a constraint, breaks by having surfaces of irregular fractures. The break is opposed to the Clivage, which in the case of applies a fractured mineral presenting of the plane surfaces.

One distinguishes various types of breaks:

  • conchoïdale : break presenting in a clear and brilliant way, and in which surface is undulating; undulations arranging itself concentrically starting from the point of shock which produced the unequal fracture

  • rough
  • friable
  • earthy
  • esquilleuse

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