Acronym ...
Name a3b4c,
general variation of great rhombicuboctahedron
 
Circumradius sqrt[2a2+4b2+3c2+4ab+(2ac+4bc)sqrt(2)]/2
Vertex layers
LayerSymmetrySubsymmetries
 o3o4o o3o . . o4o
1a3b4c a3b .
(a,b)-{6} first
. b4c
(b,c)-{8} first
2 a3B . . C4c
3 C3B . . a4A
4 b3X .
(layers 4 & 5 interchange for c > aq)
. a4A
5 X3b . . C4c
6 B3C . . b4c
opposite (b,c)-{8}
7 B3a .  
8 b3a .
opposite (b,a)-{6}
(A=c+bq, B=b+cq, C=a+b, X=a+b+cq)
Lace tower
and approx. ASCII-art
          b   a   b                  
        o---o---o---o           - a3b
    c / B c | a | c B \ c           height = c/sqrt(3)
    o-------o---o-------o       - a3B
 b /  B  b /  C  \ b  B  \ b        height = bq/sqrt(3)
  o-------o-------o-------o     - C3B
c | b  c/  \a b a/  \c  b | c       height = c/sqrt(3) resp. height = aq/sqrt(3)
  o---o     o---o     o---o     - b3X + X3b [comp. only if c=aq, else 2 layers: heigth = |c-aq|/sqrt(3)]
a | C a\  /c  B  c\  /a C | a       height = aq/sqrt(3) resp. height = c/sqrt(3)
  o-----o-----------o-----o     - B3C
 b \  a |b    B    b| a  / b        height = bq/sqrt(3)
    o---o-----------o---o       - B3a
    c \   \c     c/   / c           height = c/sqrt(3)
        o---o---o---o           - b3a
          a   b   a                  
      c b   c   b c               
      o---o---o---o          - b4c
 a  / C a | c | a C \  a          height = a/sqrt(2)
c o-------o---o-------o c    - C4c
b | a b /   A   \ b a | b         height = b/sqrt(2)
A o---o-----------o---o A    - a4A
c | a | c   A   c | a | c         height = c
A o---o-----------o---o A    - a4A
b | C b \   c   / b C | b         height = b/sqrt(2)
c o-------o---o-------o c    - C4c
 a  \   a |   | a   /  a          height = a/sqrt(2)
   c  o---o---o---o  c       - b4c
        b   c   b                 
Coordinates (c/2, (bq+c)/2, (aq+bq+c)/2)     & all permutations & all changes of sign
General of army (is itself convex)
Colonel of regiment (is itself locally convex)
Especially
girco (a=b=c=x)
x3x4q
q3x4x
w3x4x
toe (a=b=x, c=o)
x3f4o
x3u4o
x3w4o
u3x4o
(-x)3x4o
sirco (a=c=x, b=o)
q3o4x
f3o4x
u3o4x
x3o4q
tic (a=o, b=c=x)
o3x4q
o3x4u
o3q4x
Confer a3b3c   a3b5c  

Incidence matrix according to Dynkin symbol

a3b4c   (a ≠ 0, b ≠ 0, c ≠ 0 : general girco-variant)

. . . | 48 |  1  1  1 | 1  1 1
------+----+----------+-------
a . . |  2 | 24  *  * | 1  1 0
. b . |  2 |  * 24  * | 1  0 1
. . c |  2 |  *  * 24 | 0  1 1
------+----+----------+-------
a3b . |  6 |  3  3  0 | 8  * *
a . x |  4 |  2  0  2 | * 12 *
. b4c |  8 |  0  4  4 | *  * 6

a3b4o   (a ≠ 0, b ≠ 0, c = 0 : general toe-variant)

. . . | 24 |  1  2 | 2 1
------+----+-------+----
a . . |  2 | 12  * | 2 0
. b . |  2 |  * 24 | 1 1
------+----+-------+----
a3b . |  6 |  3  3 | 8 *
. b4o |  4 |  0  4 | * 6

a3o4c   (a ≠ 0, b = 0, c ≠ 0 : general sirco-variant)

. . . | 24 |  2  2 | 1  2 1
------+----+-------+-------
a . . |  2 | 24  * | 1  1 0
. . c |  2 |  * 24 | 0  1 1
------+----+-------+-------
a3o . |  3 |  3  0 | 8  * *
a . c |  4 |  2  2 | * 12 *
. o4c |  4 |  0  4 | *  * 6

o3b4c   (a = 0, b ≠ 0, c ≠ 0 : general tic-variant)

. . . | 24 |  2  1 | 1 2
------+----+-------+----
. b . |  2 | 24  * | 1 1
. . c |  2 |  * 12 | 0 2
------+----+-------+----
o3b . |  3 |  3  0 | 8 *
. b4c |  8 |  4  4 | * 6

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