Minerals in Granite. 



503 



Chester, the quartz in this rock is sometimes rose red. In Goshen 

 its crystals are sometimes of an extremely delicate smoke color ; and 

 in Williamsburgh, this variety occurs uncrystalized in large quanti- 

 ty, about two miles west of the meeting-house. In Bristol, Rhode Is- 

 land, occur fine specimens of amethyst ; which are said to proceed 

 from the granite of Mount Hope. This locality a few years since 

 promised something for the lapidary. 



At the Southampton lead mine pseudcmorphous quartz is some- 

 times met with. But the most interesting locality is in the galena vein 

 near the agentine locality, in West Hampton. The pseudomorphous 

 crystals are very perfect, and have the form of hog tooth spar, and of 

 cubic fTuate of lime. These crystals are hollow, and generally are 

 drusy without and within. It is now, however, very difficult to ob- 

 tain specimens, especially of the variety, that has assumed the form 

 of fluor spar. (Nos. 1501, 1502.) 



In Conway I observed that some of the quartz in coarse granite 

 was highly fetid. The same is found in Chester. 



A mineral is sometimes seen at the Southampton lead mine, which 

 appears to be hornstone. (No. .1502.) 



Pinite, according to Mr. C. T. Jackson, has been found in granite 

 on George Hill in Lancaster, and of fine quality. 



In the 20th volume of the American Journal of Science, I have 

 described a specimen of limpid topaz in granite, found upon the 

 White Hills in New Hampshire. In Haddam, Ct. it is well known, 

 occurs the chrysoberyl in the same rock. 



Spodumene abounds in our granite. Goshen is its most abundant 

 locality. About two miles north of the village, it occurs on the road 

 to Ashfield ; and also about three miles northeast of the center of the 

 town, on the road to Plainfield, at a locality long celebrated for 

 furnishing several interesting minerals. It is found likewise in Ches- 

 terfield, Norwich, and Chester. In all these places its characters are 

 similar. It occurs in prismatic masses whose crystalline form can- 

 not be determined. These masses are sometimes four or five inches 

 across, and sometimes of great length. Dr. Dwight of Cummington 

 showed me a specimen from Chesterfield, containing a prism 21 inch- 

 es long, yet broken off at both ends. These larger masses are com- 

 monly of a white or gray color, and resemble feldspar. But the smal- 

 ler specimens are frequently of a delicate green color, resembling ve- 

 ry much the spodumene from the north part of Europe. A few spec- 

 imens I have noticed of a light rose color. (Nos. 1504 to 1507) 



