1877.] 
I. Contains 92.38 % 
117 
SMUGGLER MINE— Continued. 
WA Vil 
Zn — trace — 0.50 
Fe = 1.35 —— 0.92 
Te — 36.24 ————— Das 9 
99.27 99.66 
[Genth. 
coloradoite and 7.76% native tellurium. 
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When I first received the mineral from the Smuggler, the preliminary 
examination of it made me think that gold and silver might be essen- 
tial constituents of the same ; the subsequent analyses showed them to 
be admixtures. The specimen which furnished the material for investi- 
gation, having come from near the surface, contained such a quantity 
of tellurite, that I was anxious to analyze the ore from the undecomposed 
part of the vein, and, for this reason, delayed the publication of my 
results for over six months. After a great deal of trouble, I secured a 
specimen, but unfortunately, it proved to be almost pure native tellurium 
(of which I gave the analyses above), I. containing an admixture of only 
1.75 %, and II. of 2.20% of coloradoite. 
4, CALAVERITE. 
I established this species nine years ago, on very minute quantities 
found, associated with petzite, at the Stanislaus Mine, Calaveras County, 
California ; then I observed it again as a great rarity at the Red Cloud, 
and published an analysis made with only 0.1654 grammes. From Mr. 
Berdell I received a short time ago a specimen, which furnished me with 
more than five grammes of calaverite, mixed only with a small quantity 
of quartz and coated with ? roscoelite. A reéxamination of this rare spe- 
cies was therefore highly desirable. 
In very minute, imperfect crystals, resembling rhombic or monoclinic 
forms, but too indistinct for a more exact determination ; cleavage indis- 
tinct ; massive granular; fracture uneven. 
H = 2.5; Sp. Gr. (of the pure mineral, less quartz), = 9.043. Pale 
bronze yellow; brittle. In thin seams and disseminated in quartz and 
gangue-rock at the Keystone and Mountain Lion Mines. 
