442, Scientific Intelligence. 
It is remarkable for the large proportion of magnesia. Formula 
3R* Sit#: Si, Delesse observes that phlogopite occurs in granular 
limestones, especially the dolomitic, in France as well as in Ameriea. 
On Emerylite, Euphyllite, Margarite, Mica; by J, Lawrence 
Smirnz and G. J, Brusu.—This volume, p. 207. wt 
Emerylite. —=G. Rose — —— Min., 1852, p. 40) makes em- 
iphanite er the formula ~~ hey Sisk SiH. 
[The analyses of maryarite i oni and a y Dr. J. Lawrence 
Smith and G. J. Brush, prove its identity with pein aan See this 
volume, PP- 46 and 208. ] 
e vi 
mann’s view of Heteromerism, in explaining the composition. 
Lapis — in the Cordilleras of the Andes.—Mr. F. Fizip men- 
tions (Quart. J. Chem. Soc., iv, 331) the occurrence of large masses 
of RN bright blue rock in the Cordilleras, which proved on analysis to be 
is Lazuli, interspersed with small veins of pure carbonate of lime. 
The particular locality is not mentioned. It afforded on analysis :-~ 
Si #1 8 Fe G Ca 
8760 1121 165 0:08 086 966 «(1505 10=9971 
Searing 9 and Epidote ; R. Hermann. (Jour. f. pr. Chem., 
ly, 451.) 
Euclase.—An analysis by J. W. Matter, (Phil. Mag. [4] ¥; 127,) 
afforded— 
1 Be Fe Sn 
44-18 3187 21-43 1:31 0359914 
The formula deduced by Mr, Mallet is $e2 Si+2H1 Si, or if alumina and 
glucina are isomorphous, (#e, 4l)4 Si?. Specific gravity, 3°036. 
Lg of Beryl from granite of Hirschgasse near Heidelberg, by 
TRAGER ; and a Beryl from Zwiesel in Bavaria, by W. Ma¥=®, 
(Jahrb. ‘Vin. 1851, 185; Lieb. and K.’s Jahersb. f, 1851, 779.)— 
Si Al Fe Be Mn 
66:90 18-15 2-95 12-20 ——- =100'20 
66°56 17-82 2°43 12°66 O1l = 99°58 
~ Orangite.—Analysis by Damour, Sons - Mines, fh ts 587. ie 
ti T ~ Ga Kk 
’ 'b 
T%52 (1165 159 «088 1-13 028 031 O17 O14 van ea _ 
The fors formula Th? Si--2Tf, is that of Thorite, with which the species 's 
nti 
On ie Sphene of Grenville, Canada; by T. S. Hunr, (Logan's 
Rep., loc. cit., p- 118.)—-This sphene, Shinad Lederite by Shepard, 
‘occurs In crystals and masses in a vein of plumbago, with tabular spats 
feldspar, pyroxene, idocrase and rarely zircon and cinnamon~ sa 
garnet. H.—=5:5. G,—3-49-3-499, from one locality ; 3510 
