32 
MUSEUM BULLETIN NO. 27. 
Figure 5. Diopside, colourless [crystal 
from Montreal chrome pit; crystal drawn 
with the edge (33l : 33l) vertical to em- 
phasize the prismatic appearance. 
Figure 6. Diopside, colourless crystal 
from Montreal chrome pit; orthographic 
projection of one of the measured crystals, 
showing two of the new forms, s. (534) 
andr. (IS-4'10). 
A 
Figure 7. Diopside, colourless crystal Figure 8. Back view of 
from the Montreal chrome pit; illustrates Figure 7. 
the prominent development of the acute 
hemi- pyramid, A (331); the crystal also ex- 
hibits the new forms Y and J. 
