50 Miscellaneous Localities of Minerals. 



Rock Specimens for the American Geological Society I 



1 . Talcose Slate, containing common augite. This rock 

 in ledges forms the western shore of Sechuest Point, S. E, 

 part of Middletown. 



2. Gray Wacke, or Puddingstone. It forms a mural 

 precipice of seventy to eighty feet in height, in some places 

 along the western part of Sechuest beach, in the S. E. 

 part of Middletown, about two miles from Newport. This 

 is the grandest exhibition of this formation which I have 

 ever seen. It is composed of oval siliceous pebbles, 

 which vary in size, from the smallest grains to five feet in 

 length ; all of them much compressed and pointing N. and 

 S. Colour, light bluish gray. This rock has transverse 

 seams which are straight and perpendicular. Between 

 two of these seams, perhaps five feet apart, at the highest 

 part of the cliff, the rock is broken out and washed away 

 by the surf, for thirty or forty yards from the shore, and 

 forms what is called " Purgatory." This rock rests upon 



3. Argil lite. 



4. Granite, Newport, a vein of which commences about 

 20 rods E. of the bed of serpentine and continues in a S. 

 S. E. direction about If miles to the shore at Coggeshall's 

 Ledge, passing under Coggeshall's pond, and is perhaps 

 less than | of a mile wide. E. of this granite is argil- 

 lite, 3. 



6. Argillite, forming the S. shore of Newport harbour, 

 immediately N. of the bed of serpentine. 



6. Serpentine, commencing one mile in a direct line S. 

 W. from the Episcopal church, on Brenton's Neck, at a 

 place called " Willow grove," on Thos- Hazard's land, S. 

 of the rocks of Limestone in the S. part of the harbour, in 

 an extensive bed, extending perhaps | of a mile to the 

 shore on the west. 



7. A Siliceoiis Slate lies west of the granite ridge and 



8. Basanite, is imbedded in the foregoing in different 

 places, and more abundant 2i miles in a direct line S. W. 

 by S. from the Episcopal Church, on the W. side of Price's 

 creek, 60 rods from its mouth. . 



9. Shining Argillite, forming the shore of Cannonicut 

 Island, N. of the light house, and near the ferry landing 

 &c. fee. Jamestown. 



