236 Localities of Minerals, 



Art. V. Localities of Minerals. 



To the Editor of the American Japtirnal of Science, ^c. 



New-Yojrk, Dec. 21, 1818. 

 Dear Sir, 



XT is desirable that some mode should be adopted by which 

 the public may become acquainted with all the JVew American 

 Localities of Minerals, as they are discovered from time to 

 time. With deference I would suggest, that in each number 

 of your Scientific Journal, new localities might be recorded in 

 alphabetical order, for present information and future refer- 

 ence. 



The following localities, which have come under my ob- 

 servation, and which are probably not noticed in any work, 

 are at your service. 



1. Agate. Rolled mass: occurred near Powles Hook, 



New-Jersey. 



2. Apatite. Truncated crystals of one inch, and amor- 



phous ; occurs in granite, chiefly in the felspar- 

 Corker's Hook, vicinity of New- York. 



3. Brown Mammillary Hematite, covering quartz crystals. 



Perkiomen lead-mine. Montgomery county, Penn- 

 sylvania 



4. Carbonate of Magnesia. Structure earthy. Apparently 



a pure carbonate of magnesia. In mica slate, and 



granite ; chiefly in the quartz. R^xborough, Phila- 

 delphia county. 



5. Common Jasper. Traversed by veins of semi-opal. 



Small detached masses, frequently waterworn. 

 Rhinebeck, Dutchess county, New- York. 



6. Compact Malachite. Perkiomen lead-mine. 



