IIT JAM
Anukruti Asked a Question
October 17, 2020 11:28 ampts 30 pts
  • IIT JAM
  • Geology (GG)

Apart from kyanite ,does calcite show double hardness of 3 for all surface and 2 for parallel face?why kyanite is called diasthene?

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  • Sajan sarthak sahoo
    KYANITE is having synonym diasthene due to dual hardness.
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  • Sajan sarthak sahoo Best Answer
    Yes it shows...it has Hardness 3 you have studied it in Mohr hardness (only on the basal pinacoidal faces, calcite has a hardness of less than 2.5 and can be scratched by a finge...
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