I'm using the 10.9.69 pre-release and am getting anomalous results with
"spacefill ionic".

With an (abbreviated-for-clarity) file like this for calcite:

data_global
_cell_length_a 4.988
_cell_length_b 4.988
_cell_length_c 17.061
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 367.611
_symmetry_space_group_name_H-M 'R -3 c'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Ca   0.00000   0.00000   0.00000
C   0.00000   0.00000   0.25000
O   0.25670   0.00000   0.25000
loop_
_atom_type_symbol
_atom_type_oxidation_number
Ca 2
C  4
O -2

>From the Jmol code, ionic radii should be:
C+4: 160
O-2: 1320
Ca+2: 990
but with 'spacefill ionic' command, oxygen is smaller than calcium. Ideas?

--Phillip Barak

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