Mineralogy and Geology. 275 
Whit Lares in the Province of Constantine, Algeria, (Aun. 
des Mines, [4], xx, 81.)—An analysis by M. E. Cumenge afforded— 
Sb 62 oO H 15 #e 1 Argillaceous gangue 8 = 98 
The formula deduced is 3Sb 05 +2Sb O° +15H0. 
There are two mines of oxyd of antimony in the Province of Con- 
stantine, one north of Ain-Bebbouch, at Sensa, and the other at Oued 
Hamimim, northeast of Sensa. The two yielded 1541 metric quintals 
of ore in 1850. 
a of White Antimony of Pereta, Tuscany; Menecuini and 
Becut.—This Journal, xiv, 61. 
Native Tron.—M. Baur ba described specimens of carbonized wood 
aie _ Iron and Magnetic gore, Sand from Pennsylvania; by 
» H, Garrerr.—This Journal, xiv, 
Analyses of Braunite, Chromic ba. and Silicated Chrome, from 
Tuscany ; MeneeHini and Bec ait.—This Journal, xiv 
Vanadixm in the iron from the Perm Smelting Works, Russia.— 
Sosirarn shane in 1839 that vanadium existed in the iron smelted at 
Perm. In a cupreous sandstone, in which with the help of a lens, 
Vanadate of copper was facogeiced, he found on analysis 0°53 p. c. of 
vanadic acid. An analysis of the eg afforded— 
C Va Cu Al Mg Ca 
3°03 1-99 sn 12°64 ie 97 0°89 O78 0°95—=98'76 
The black copper obtained at the same time with the cupreous pig: 
iron afforded— 
Carbon 0-94 u 9052 Fe 617 
—J. Frirzscue, Bull. de “a pac Chem. Gaz., No. 218. | 
On Octahedral Specular Iron; by T.S. Hunt.—This Jour. xiii, 370. 
Titanic Iron from Miask ; E. E. Scumm, ibid. (Pogg. Ann, Ixxxiv, 
98.)—A large’ crystal of titanic iron from Miask is a broad table 
150™™- broad and 95™m™- thick, presenting the planes OR, R,—$R. 
Cleavage basal but not perfect; H.=6; G.=485-489 ; streak black ; 
very weak i Gp Composition :— 
Fi 2 Be 107 Min 077 = 999 
agreeing db sah the analysis by Mosander. 
Olivine of the Meteoric iron of Atacama; E. E. Scumin, (Pogg. 
Ann, Ixxxiv, 501. )—Composition :— 
Mn Mn 
nS Mg. see 1:81 =99-10 
afording ‘a general formula (Mg, Fe, Mn)? Si, or 5Mg* Si+- (Fe, Mn)? Si. 
Analysis of a Nickeliferous magnetic Pyrites from Pennsylvania ; 
viol _ Sxeit Jour. xiii, 219. 
