Anukruti posted an Question
October 24, 2020 • 01:11 am 30 points
  • IIT JAM
  • Geology (GG)

If crystallographic axis of a mineral is marked in 350 and it rotates clockwise, the extinction comes at a mark 20.____will be the extinction angle

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    Rahul kumar best-answer

    Answer: 30° Extinction angle is the angle between any preferred direction in mineral and the extinction position. The extinction angle will be the angle difference between 350 and 20 mark on stage's scale. The angle difference between 350 mark and 20 mark is 30°, so the extinction angle will also be equal to 30°.

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