Acronym ...
TOCID symbol OC*
Name 3oct+6{4} (?)
Circumradius 1/sqrt(2) = 0.707107
Vertex figure [(3,3,3/2,3,4)]
Coordinates (1/sqrt(2), 0, 0)   & all permutations, all changes of sign
General of army oct
Colonel of regiment oct
Confer oct+6{4}   2oct+6{4}   2oct+12{4}  

Looks like a compound of 3 coincident octahedra (oct) plus 3 diametral pairs of squares, and indeed edges coincides by 5, squares by 2, and each octahedral triangle coincides with 2 further sefa triangles, while vertices coincide by 4.


Incidence matrix according to Dynkin symbol

s3s4/3s

demi( . .   . ) | 24 |  1  2  2 | 1 1  3
----------------+----+----------+-------
      s 2   s     2 | 12  *  * | 0 0  2
sefa( s3s   . ) |  2 |  * 24  * | 1 0  1
sefa( . s4/3s ) |  2 |  *  * 24 | 0 1  1
----------------+----+----------+-------
      s3s   .     3 |  0  3  0 | 8 *  *
      . s4/3s     4 |  0  0  4 | * 6  *
sefa( s3s4/3s ) |  3 |  1  1  1 | * * 24

starting figure: x3x4/3x

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