QUIZ:  Habit                     

Study the above image of a crushed building material under crossed polarized light, then choose the description below that most accurately describes the sample.
The sample is composed predominantly of small prismatic grains with several fibrous grains
The sample is composed predominantly of small irregular grains with several fibrous grains
The sample is composed predominantly of small irregular grains with several prismatic grains
The sample is composed approximately equal amounts of small irregular and rhombic grains with several fibrous grains 


© 2001 Wayne G. Powell