Machine-translated by Google. Questions are authored in English.
Top

Discussion

Cleavage differs from fracture in following

  • A.the direction of the applied blow
  • B.the mineral's external crystal faces and their symmetry
  • C.the bedding of the enclosing rock
  • D.planes of structural weakness in the crystal

Answer: D

A mineral cleaves along the planes where the bonding is weakest, so the surfaces are flat and reproducible whatever direction the blow comes from. Fracture is irregular breakage where no such plane exists, as in quartz.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.