Geology, 8fc. of the Connecticut. 22l 



exists in crystals half an inch in diameter and often four or 

 five inches long, sometimes terminated by three-sided pyr- 

 amids, in common while quartz. The contrast renders the 

 specimens quite beautiful, and one large loose mass lies on 

 the surface nearly Iwo feet in diameter, which would be an 

 ornament to a mineral cabinet. 



2. Green Tourmaline. At Chesterfield and Goshen, Mass. 

 [Gibbs.) These interesting localities have been so well 

 described by Col. Gibbs, as to render any farther remarks 

 unnecessary. (Am. Jour. Vol. I. p. 346.) 



3. Indicolite. At Chesterfield and Goshen. (Gibbs.) 

 At Bellows Falls. (&7/w?of?z.) At Hinsdale, New-Hamp- 

 shire, in granite, in great abundance. (J. A. Allen.) This 

 locahty is found most readily by taking the road from Hins- 

 dale to Winchester. 



35. Ruhelliie. At Chesterfield and Goshen, Mass. [Gibbs.) 

 See his account in the Journal of Science, as above cited. 



56. FcUh 



^par. 



\. Common Feldspar. Near Haddam, greenish and trans- 

 lucent. (McEwen.) In the same vicinity it is of a light flesh 

 color, and in large masses in granitic veins and beds. Also 

 of the same color in pudding-stone, Deerfield. Also in large, 

 bluish, imperfect crystals, in granite, Leverett. It occurs, 

 of course, abundantly in all that part of the map colored a? 

 granite, gneiss and sienite. 



2. Advlaria. At Haddam. (T. D. Porter.) At Wcst- 

 Springfield and Southampton lead mine. {Waterhoxise.) At 

 Brimfield. {Eaton.) 



S. Siliceous Feldspar. (Gibbs.) At Chesterfield, Mass. 

 and Haddam. (Gibbs.) Also at Goshen — a new variety^ 

 discovered by Dr. Hunt. 



37. Precious Emerald. At Haddam ? For a discussion of 

 the subject whether this mineral exists in the United States. 

 see Cleaveland's Mineralogy, Vol. l.p. 341. 



