194 BULLETIN OF THE ESSEX INSTITUTE. 



In the corderite gneiss at Marble Kidge, North Ando- 

 ver. 

 No. 121. Titanite: Sphene. 



Micro-crystals are found in augite-syenite at Salem 

 Neck, Beverly, Magnolia, etc. 

 No. 122. Bastite : Schiller Spar. 



Resultiug from the alteration of pyroxine-diallage in the 

 diabasic norite, Nahant. 

 No. 123. Pinite. 



Pseudomorph of orthoclase ; Eagle Island, Little river 

 and Kent's Island, in Nevvbury, etc. 

 No 124. Jeffersite. 



In broad crystalline plates resembling biotite mica, 

 northwest side of Powder House hill, Beverly, and in the 

 old lime pits near Stevens' pond, Boxford. 

 No. 125. Pennenite. 



Pomeroy quarry, Gloucester. 

 No. 126. Delessite. 



This occurs as thin folia in seams of diorite at Salem, 

 and in diabase dyke rock in Bradford, etc. 

 No„ 127. Uralite. 



A paramorph of hornblende after pyroxene. This min- 

 eral is abundant, microscopically, in the quartz-augite-di- 

 orite of Newburyport, Carr's Island, etc. 

 No. 128. Fergusonite. 



Found in the granitite at the quarry of the Rockport 

 Granite Co., Rockport. 

 No. 129. Apatite : Phosphate of Lime. 



Microscopic crystals occur abundantly in diorite, augite- 

 syenite, and many dyke rocks. 

 No. 130. Apatite : var. Guano. 



Found incrusting the rocks, Great Haste ledge and Half 

 way rock, Salem harbor. 

 No. 131. Calcite: Calc Spar. 



