, Miscellanies. 387 
color gives a liver brown streak of a conchoidal fracture and weak 
lusture ; its spec. grav. is between 2.5 and 2.57. 
6. Wolchouskoit.—Kammerer described a new mineral from Si- 
beria which is amorphous, bluish green opake, and of conchoidal frac- 
ture 5 its touch is greasy, gives a bluish green streak and adheres 
slightly to the tongue; consists of silica, alumina, oxide of chrome 
and water. 
7. Worthite—This new mineral has been described by Hess and 
found in a scapolitic boulder from the neighborhood of Petersburg. 
It is colorless, crystalline foliated, of specific gravity of about 3.0; 
harder than quartz, infusible before the blow-pipe and dissolves with 
difficulty and with effervescence ; in soda it becomes transparent 
and yields water by heating in a tube ; it becomes dark blue with ni- 
trate of cobalt. Hess found it composed of Silica, 40.58 
Alumina, = - - - - - - 53.80 | 
Magnesia, - - - - - - 1.00 
Water, - ~ - - = - - 4.63 
The formula is AAg+ Ss. 
8. Pyrargillite—Nordenskold discovered and analyzed two new 
minerals from Finland, the one he calls by the above name from its 
character of diffusing a clayey smell by heat. It is partly black, 
light and lustrous like the Lordawalite and partly bluish granular or 
red and without lustre ; it seldom occurs pure in uncrystallized mass- 
es, the form of which approaches to a four sided prism with truncated 
angles sometimes it is traversed with chlorite so as to appear spark- 
ling by polishing ; its specific gravity is 2.505; its hardness 3.53; it is 
decomposed completely by muriatic acid ; it occurs in granite and it 
consists of Silica, - - - 43.93 
Alumina, - - 28.93 
Protoxide of Iron, - 5.30 
Formula. u Magnesia with some ae 2.90 
toxide of Maneenete, 
Me tani a4 Potassa, - - 1.05 
‘ Soda, - - - 1.85 
| Water, - - - 15.47 
fies! - = = 0.58 
9. Amphodellite—This is the other mineral discovered by the 
above author from the lime quarries of Lozo in Finland, its crystalli- 
zed form bears much analogy to that of felspar; it is clear reddish, re- 
Vou. XXVI.—No. 2. 50 
