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Vaibhav Singh posted an Question
September 03, 2021 • 12:27 pm 30 points
  • IIT JAM
  • Geology (GG)

‛diametral prism’ jaisa koi form hota h kya?

‛diametral prism’ jaisa koi form hota h kya? please reply

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    Saurabh 1 Best Answer

    Yes they do exist in crystallography (in monoclinic). Clearly from the figure you can see some parallel faces meeting at a point and forming a structure like cube or parallelopiped (in some books but don't get confused because paralleopiped is quite similar to cuboid not cube). Those parallel face have some well defined name, that is -- Pinacoids. And I assume that you might be knowing about the pinacoids (as they are majorly find in monoclinic).

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    Sushmita best-answer

    The pinacoids are the orthopinacoid(100), clinopinacoid(010), and the basal plane(001). (Pinacoid means two parallel faces on the opposite side of the centre) The diametral prism formed by these three pinacoids, taken together, is the analogue of the cube in the isometric system. And it is bounded by three sets of unlike faces. Shown below image-

    cropped1116608798513742371.jpg
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