When a Mineral Fractures Along a Cleavage Plane, What Does

question 108

Multiple Choice

When a mineral fractures along a cleavage plane, what does this suggest about the crystal structure of the mineral?

• A) The crystal grows only planar faces that become weak zones that form cleavage.
• B) The crystal contains warped planes called twin planes that weaken the crystal structure and allow it fracture along a planar surface, causing cleavage.
• C) The atoms are arranged in a simple orderly arrangement with uniform bonding.
• D) The crystal structure contains planes along which chemical bonding is much weaker than other directions.

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