Interference figure. Test type B. 5

In this test, a mineral grain is shown and four questions are going to be raised. When pressing on the crystal, its interference figure will appear.

Question 1: optic group

Question 2: optic sign

Question 3: 2V angle

Question 4: orientaction of the crystal cut

After every answer, you may go to back to this page to ask for a new question.

 

 

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