Homework Help Forum: earth science

Posted by devils on Saturday, October 24, 2009 at 6:49pm.

Why are some crystals large and perfect, while others are small and irregular? The only answer in my book that seems close is : The crystal shape, hardness, cleavage and density of a mineral are determined by the internal arrangement of its atoms or ions. I don't see anything about why it would be small or large just that they have 6 basic shapes.

• earth science - Laura, Saturday, October 24, 2009 at 6:50pm

  time and space grown is also a factor

  
  

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