192 BULLETIN OF THE ESSEX INSTITUTE. 



No. 97. Albite. 



Fine, glassy, multiple twinned crystals are found at the 

 Pomeroy quarry, Gloucester. 

 No. 98 Orthoclase. 



Simple and twinned crystals are found in pegmatetic 

 masses in the granitite at Kockport. Common in the 

 granite. 

 No. 99. Microcline : Amazon Stone. 



Speeimens of a bright verdigris green color are found 

 at Briscoe hill, Beverly, and at Gloucester and Rockport. 

 No. 100. Microcline-microperthite (Soda Microcline of 

 Brogger.) 



Found in coarse crystalline masses in the elseolite-zir- 

 con-syenite at Salem Neck. 



No. 101. Orthoclase-microperthite (Albite and Ortho- 

 clase intergrowths.) 



In the ela3olite-zircon-syenite Coney Island, Salem 

 harbor. 

 No. 102. Sanadin. 



Crystals from the Bostonite porphyry (Rosenbusch), a 

 dyke rock on Coney Island, Salem harbor. 

 No. 103. Anorthoclase. 



Crystals in the keratophyre at Marblehead harbor (See 

 Bull. M. C. Z., Geol. Ser., Vol. n, No. 9, p. 167.) 

 No. 104. Prehnite. 



Rare, in reniform or globular masses in the diabasic nor- 

 ite at Nahant. 

 No. 105. Natrolite. 



This occurs as a secondary pseudomorph of elreolite on 

 Salem Neck and in amygdules in the amygdaloidal mele- 

 phyre at Rowley. 

 No. 10G. Steatite : Soapstone. 



In a massive bed associated vvith the Serpentine at New- 

 buryport. 



