216 E. 8. Dana—Stibnite from Japan. 
here because they include the finest of which the writer has 
any knowledge. There are, however, in Mr. Stadtmiiller’s 
hands numerous other specimens which also deserve mention, 
being hardly inferior in size or beauty to those which have 
een described. It would be difficult to name another case on 
record in which metallic crystallization has taken place on so 
grand a scale. 
The luster of these crystals of stibnite is an important ele- 
ment in their beauty. In all the better specimens this luster is 
very brilliant, giving the crystalline faces a polish which is 
rarely excelled. e luster of these natural planes is not less 
splendent than that of a fresh surface obtained by the perfect 
brilliancy should be gradually lost. 
rom a scientific point of view the complexity of form ob- 
served among the Japanese stibnites is their most remarkable 
character. There have certainly not many cases been observed 
in which the crystals of a species from a single Jocality show 
as many as seventy distinct and well-defined forms.* Previous 
to 1864 but sixteen planes had been identified. Krenner in 
always prismatic, elongated in the direction of the vertical 
axis, and are often more or less flattened parallel to the brachy- 
pinacoid; the prismatic planes are generally numerous and 
often follow each other in oscillatory combinations, The terml- 
nation of the free extremity is generally formed by the zone 
tween the brachypinacoid (010) and the unit macrodome 
#101), and the three commonest planes are p(111), 7(348) and 
7(353), of which the plane z has usually the larger devere 
ment. Together with these the new plane w,(5:10°3) is ordl- 
narily present. This occurrence of the zone mentioned con- 
Z * Joting enumerates 172 on the epidote from the Untersulzbachthal, Z. Kryst., 
ii, 321, 1878. 
+ Ber. Ak. Wien, li, Dec. 9, 1864. t Jahrb. Min., 1880, i, 135. 
