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Space Group

  1. May 26, 2014 #1
    In the general-symmetry-space group table over to the right on the page below:
    https://en.wikipedia.org/wiki/Mimetite

    It states:

    Space group: P63/m

    What does the letter P indicate and also the subscript 3?

    Thanks
     
  2. jcsd
  3. May 26, 2014 #2
  4. May 26, 2014 #3
    "6" indicates a hexagonal space group

    "P" indicates a primitive group (as compared to face or body centered ones). All hexagonal space groups are primitive.

    "_3" indicates a screw axis along the hexagonal c-axis

    "/m" indicates a mirror plane perpendicular to the c-axis.

    This is space group #176

    The Bilbao crystallographic server can provide all kinds of details.

    http://www.cryst.ehu.es/
     
  5. May 26, 2014 #4
    Thanks guys!
     
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