Mineralogy and Geology. AIT 
JI. Mineratocy anp GEoLoey. 
igs. 1, 2, Compound Crystals of camer Glan In fig compo- 
sition is parallel to I, or the prism of 119° 35’; ic parallel to 27, pro- 
28’. In 
ducing thus a cruciform twin with the sie of intersection 125° 
fig. 2, the composition is parallel to a face $, and the prisms cross at 
angles of 92° 5’ and 87° 55’. 
Fig. 3, Pores, a crystal from Rossie, New, York, in the cabinet of 
_W. T. Vaux, Esq., of Philadelphia. The crystal is nearly an inch in 
“diameter, and is peculiarly fine, although the surfaces, while very 
smooth, are not polishe 
Fig. 4, Mispickel (Danaite). From a crystal in the cabinet of the 
late J. E. Teschemacher of Boston. It presents the unusual planes 12, 
3, and 33. It is from ron. New Hampshire. 
‘igs. 5,6, Quartz. Figure 5 represents crystals from Quebec, fur- 
nished the author for eeamianide by Mr. T.S. Hunt. They were 
pene —3. The other faces were shining. Other crystals from the 
e place were the inverse of that figured. Fig. 6 is taken from a 
are bright. The inclination of $$ on R gave on measurement 175 
Figure 7, Pyrowene. fine ea ae erystal an inch long with 
bright a age from PORE, Pgnd, Nev 
i ure 8, Spodumene. “This is a new ae of the same crystal be- 
fore roughly drawn fe the author. The planes -22 and a appear to 
be hemihedral: but whether this is an accidental distoptiod or not is 
uncertain. 
Figure 9, Babingtonite ? ? The figure represents small polished black 
crystals occurring in mica slate at Athol, Massachusetts, referred to 
Babingtonite by Prof. C. U. Shepard. The ein is triclinic, and the 
following are approximately the angles 
OsF=90-91°, I: P==110° 30! and 69° 30’ 
Oiz Pe-85'," IT: t3=129° 
O : #=153° 20, TP : 43==120° 30’. 
O : -1=1385° 40’, 1: 3'=95° 30’. 
O : 1=185° 30° O : 13=95° 30’. 
It resembles Epidote, and it is pombe, that O, 4’ and I’, correspond 
respectively to O, 4% and 2% in Epidote- 
Figure 10, Zircon, from McDowall Co., North Carolina. The crys- 
tals are found in the sands of the Gold region, and are seldom over a 
sixth of an inch in length. z 
Srconp _— Vol, XVIII, No. 54.—Nov., 1854. 58 
