Calcite from Chilson Lake, Essex co. 
Page 95 
Ive wens Crystalvonsunst phase. Forms: 0(0001) and e.(0332) 
Type I. Composite crystal of first and second phase. Forms: o(0001), 
e.(0332) and ¢.(0221) 
3 Type I. Crystal of second phase. Forms: 0(0001) and 9.(0221) 
4 Type II. Forms: b (1010),x. (0111), 9. (0221), N: (5382) and »: (2.8.10.3) 
bo 
Calcite from Crown Point, Essex co. 
Page 97 
5 Twin crystals showing low projecting planes of twinned rhomboehedron 
160 
