Plate 13 



A. Dark wormlike alteration products from and in the 

 garnet of the contact zone south of Keene Center. Actual 

 field 0.1 inch or 2.5 mm. White light. 



B. Many minute garnets in diopside. Contact zone south 

 of Keene Center. Actual field o.i inch or 2.5 mm. White 

 light. 



