Genth.] 114 [Aug. 17, 
2. A very peculiar variety of native tellurium occurs at the Mountain 
Lion Mine, where it is associated with quartz and imbedded in a greenish, 
clayey mineral. It has been discovered by Mr. Theodore Berdell, of 
Boulder, Colorado, who very kindly furnished me with this and most of 
the other specimens from this mine. 
He distinguished it as ‘‘lionite.’’ It occurs in flat, plate-like masses of 
3 to #3, of an inch in thickness; it has a dark grey color, very little lustre, 
and a somewhat columnar structure at right angles with the plates ; brittle. 
Hs Sp-Gr = 4.005; 
Examined with a strong magnifying glass it shows numerous air-holes, 
but otherwise seems to be quite uniform. It looks very much as if it had 
been melted and not unlike a ‘‘matte.’’ The analyses showed an admix- 
ture of a very large quantity of silicic acid and silicates, and it is impossi- 
ble to conceive, how such heterogeneous substances could® have formed 
such a uniform material. It can, of course, not be considered as a species, 
but only as a variety of native tellurium. The analyses gave: 
is ine 
Au = 1.38 1.58 
Ag a 0.25 0.25 
Te Z 55.86 55.54 
SiO, =: 34.72 35.91 
Al,0, 
Fc,0, = 6.15 6.14 
MoQmay gee 0.17 0.19 
CaO = 0.48 0.26 
99.01 99.82 
3. Very minute, but brilliant, crystals of native tellurium, in combina- 
tions of an hexagonal prism and pyramid have been found in cavities of 
quartz at the Smuggler Mine, Ballerat District, Boulder County, Colorado. 
They are mostly distorted and have the appearance of rhombic prisms, 
from the enlargement of two opposite hexagonal planes at the expense of 
the four others. The hexagonal planes are deeply striated, and the pyram- 
idal ones rarely well developed. The ore from the deeper part of the 
vein consists largely of native tellurium in a granular variety, associated 
with sylvanite. coloradoite, &c. The analyses of it, after deducting in 
the first 28.04% of quartz, and in the second 65.21% of quartz, gave: 
Ife We 
Au — 3.40 2.18 
Ag = 1.69 asa) 
Hg = LEO 1.34 
Cu = 0.51 0.438 
Pb — 0.74 1.02 
Fe = 0.12 0.18 
MgO — 0.12 0.06 
Te — 92.29 [93.64] by diff. 
99.94 100.00 
