324 Mineralogy and Geology of a part of Nova Scotia. 



over a very curious, and in fact, hitherto unknown associa- 

 tion of analcime with native copper. The analcime occurs 

 in the form of the primary crystal, and by the replacement 

 of these planes on all its solid angles, presents the passage 

 of that form into the trapezohedron. It is of a verdigris 

 green color, but towards the centre of many crystals, this 

 color diminishes in intensity, and in some, it entirely disap- 

 pears, leaving them transparent. They also approach the 

 emerald green. The copper is partially imbedded in these 

 crystals, sometimes in globular concretions about the size of 

 a common pin's head, and at other times in minute filaments, 

 having one extremity attached to the amygdaloid, in the cav- 

 ities of which they both occur. These globules are soft and 

 malleable, and when scraped, possess the brilliant lustre of 

 pure copper. The crystals presenting themselves under an 

 aspect so new and beautiful, induced us to examine them 

 more particularly in order to ascertain the nature of their 

 coloring matter. As the amygdaloid contained a portion of 

 green earth, at first we ascribed the color to this substance, 

 as it is well known to penetrate other minerals and impart 

 to them a green tinge. But as a few of these crystals were 

 covered by a thin film of a green carbonate of copper, it 

 seemed probable that this substance might be the occasion 

 of the green stain which more uniformly pervaded them. 

 In order to ascertain it, we digested the powder of a crystal 

 which contained no copper mechanically united with it, in 

 nitric acid and detected this metal in the solution by appro- 

 priate tests. It is probable that this metal may yet be dis- 

 covered at this locality in crystals occupying alone the cav- 

 ities of the amygdaloid, as has been observed in a similar 

 rock in one of the Faroe Isles. 



The next places of mineralogical interest, which we shall 

 mention, are Hadley and Gates 1 Mountains.- — They are sit- 

 uated near each other, and each of them attains the height 

 of about three hundred feet, rising gradually from the Bay of 

 Fundy. The summit of the former is composed of amygdaloid, 

 in which nodules of chlorophoeite seems to take the place of 

 the zeolites. The nodules are frequently half an inch in diam- 

 eter. They are sometimes hollow, enclosing crystals of dog- 

 tooth spar. Specimens of the chlorophseite when recently 

 broken, are of a greenish tinge, sometimes approaching leek 

 green ; it is translucent on the edges and soft, yielding to the 

 nail with about the same readiness as horn silver. The frac- 



