54 Notices of Trappean Minerals. 



Art, TIL — Notices of some Trappean Minerals found in New 



Jersey and New York ; by Prof. Lewis C. Beck. 



About three years since, I published in this Journal* a notice 

 of some of the minerals, principally copper ores, found in New 

 Jersey. I have continued these investigations during my leisure 

 hours, and have been particularly interested in this work in con- 

 sequence of the identity of some of these minerals with those of 

 New York, in the study of which I have been engaged for six 

 years past. The present communication will be confined chiefly 

 to such as belong to the zeolite family, to which, however, the 

 more general term trappean will better apply. 



Short notices of some of these minerals, with reference to the 

 New Jersey localities, will be found in Cleaveland and other 

 mineralogical works ; and some details are given concerning 

 them in Prof. H. D. Rogers's Report on the Geology of New 

 Jersey. They occur in greater or less number in many of the 

 trap and greenstone ranges which traverse that state. Of these, 

 Bergen Hill, near Jersey City, has hitherto afforded by far the 

 greatest number of species, as well as the most characteristic 

 and beautiful specimens. A particular account of this locality 

 has been given by Mr. William O. Bourne in Vol. xl, p. 69, of this 

 Journal, and he must have been very successful in his explora- 

 tions, as his list of minerals sufficiently proves. 



My attention was called to the Bergen Hill minerals in 1838, 

 by receiving a collection of them from my friend, the Rev. John 

 L. Janeway, who informed me that he had frequently obtained 

 specimens previously to that time. I have since then made ire- 

 qnent visits to this locality, but I cannot boast of any thing like 

 the collection described by Mr. Bourne. Some of the minerals 

 which I have obtained, however, seem to be of sufficient interest 

 to warrant more than a mere passing notice, and I therefore pro- 

 ceed to the immediate subject of this paper. 



Stellite. — This is the name given by Dr. Thomsonf to a 

 mineral found in the rifts of a greenstone rock situated on the 

 banks of the Forth and Clyde canal in Scotland. A mineral, 

 which, for reasons to be shortly presented, I suppose to be iden- 

 tical with the stellite, has been found in considerable abundance 





* Vol. xxxvi, p. 107. t Outlines of Mineralogy, Geology, &c, I, 313. 



