100
’
..
:
FIGURE 4. Ice crystals growing on a mica surface,
…
‘
showing two orientations at 30°.
…
‘
'
‘,
—
‘
$;}
»
.
%
_
_
_
.
.
.
,
_
…
'
“
\
“
{
'
_
;
-
.;
\
'
'
a
\- _
-
,
@ _
,
-
,
v
'
_
…
°
«
’Ë
-_.'Î"
'
‘
.
'
.
'
,
,
ç
:
‘
.;$ r“"FIGURE 5a. Prisms and hexagonal plates
{"
, -
_
growing on the 001 face of an ortho\
__
… “__
,…
“$!“
rhombiciodine crystal.
.
.
basal plane
_
”
ÔOgan(e_r;tc:hon
4_ 52 Â
'
I
°V°
"
4.52
.
|
C = 7.36Â
l
O
.
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'r
:
onen_o
lon
7_3Ô Â
..
:
î
(||)
0
o-——-0
.
‘
Â’
},
zz
Il ;"
G=4.52Â
‘
90°
o"
.
/
I‘
pnsm plane
Figure 5 b. Possible orientations for oriented growth of ice crystals.