ee ee ee eee a ee 
biolicatl , 
Miscellanies. 179 
with Aiaiien: the above angles, as they were taken with the reflective 
goniometer, should be. substituted - those usually given, which were 
obtained with the common goniometer. 
I have not observed any terminal planes, but infer the probable obli- 
quity of the primary, from the direction of a seam of carbonate of lime, 
which intersected the crystal. If we can place any a ‘on this 
kind of evidence, the crystal is oblique from an obtuse edge. 
The scapolite in which the mineral is found, contains, also, ex ceeding- 
ly minute zircons, scarcely ;'; inch long, and also_very small prisms of 
rutile. The zircons are square prisms, having the lateral edges trunca- 
ted, and pyramidally terminated at each extremity ; a narrow intermedi- 
ary plane replaces the edge between a pyramidal plane, and one trunca- 
ting a lateral edge. They are described in Naumann’s System of Crys- 
tallographic Notation, as follows: ©Pw.aP.P.2P2. J. D. Dana. 
July, 1838. : . 
4. New locality of Crichtonite—This mineral is found in the north 
part of Litchfield, Ct. about two miles from the village. The locality is 
upon the east side of the road, leading from the Wolcottville turnpike to 
ule Bis on the land of Mr. John A. Woodruff. _ It occurs erystalli- 
short hexagonal prisms, with the alternate angles replaced by 
— planes, inclining upon the base, at an angle of 121°, and upon the 
lateral planes, at an angle of 134°. The largest of the crystals are 
about three quarters ofan inch in length, and two and one quarter inches 
in diameter. It is found imbedded in fragments of rock composed of 
quartz and mica slate. The prevailing rock is mica-slate, from which 
these probably have been detached. 
The mica slate also contains an abundance of staurotide. A common 
form of the crystals is that of the primary form, with the obtuse angles 
replaced. Some of them are four inphas in Jength 
SS : T.S.Goun, A. Be 
i Stilbite, Chabasie, ‘igh dN eke Pal: ‘wmiatigtas: Ct. Stilbite 
has been found within cavities in gneiss on the Stonington rail road, two 
miles and a quarter from that village. It is imperfectly crystallized, being 
composed chiefly of implanted globules, with occasional botryoidal mass~ 
es, which, when broken, present the stellated structure common in this 
species. Tti is of a wax-yellow color, and subresinous lustre. Some specie 
mens are of a light yellow color. 
Chabasie-—In connection with the above, were found very minute 
crystals of Chabasie, ‘of a light red color. But in a ledge on the rail 
road, a quarter of a mile further from its termination at Stonington, were 
found in rather more abundance, aggregated crystals of a deep carnation 
= tedeelor-- The crystals are very obtuse rhombohedra, from one fifth to - 
