SOME CALCITE CRYSTALS WITH NEW FORMS 



Fig. 4 



Only three faces of the new form are present. They are all nar- 

 row and bright but striated like almost all the faces in this zone. This 

 striation caused the reflections, particularly the first one, to broaden 

 out so that accurate measurement was not possible. The three meas- 

 urements are: 



