, 1889-10-31
A Description of the Mineral Belt
About the Town of Warm
.. Springs.
The Geological Formation of the
Ore Bodies and the Coun-
try Rock.
A Brief Glance at Some of the
More Promising Developed
Properties.

eho 'o"hS VI Noiu springs hhN Nciooh,
respectively. Neither Of these camps
have any Of the characteristics Of tho
other, and the substance of this article
are those of the former.
The town of Warm Springs is situated
ON the west side Of the lake about mid
way from ether extremity.
The mineral belt, 80 far as known.
comprises an area of about six miles
along the lake front by four miles ex-
tending back. Topography 1t pre-
sents series ofterraces, rising back from
the lake to an elevation of about 24OC
feet. Geologically II tappertains to states,
blended and metamorphic rocks of
micarous and silicious schists Of a
Dedded structure, folded and tilted up
to high angles with trend nearly north
and south and dip west.
Two different features of formations
are found in the belt, which are locally
referred to.as the upper and "lower'
tiers. Throughout the lower, or that
portion lying near the lake, numerous
seams and veins of quartz comprise a
considerable portion of the country
rock. In some places large irregular
reefs of quartz present themselves. In
quartz contain mineral, mostly in tho
form of iron pyrites, zinc blende and ga
lena, of IL low tenure of silver, and which
have not been developed into any consid-
cradle quantities. \ close observal ion
and study of the characteristics and re-
lations of those quartz groupings to the
schistose rock does not lead one to be-
lievo that they are ''tissures, caused by
''faulting' or filling of the country rock,
Il, Il
mating the close of some geological epoch.
This Is evidenced by the fact that the
seams and veins are very irregular and
incontinuous in their dip downward
also the trend of the bedded lines of the
schistosc rock are Coniormable to tho
irregular forms of the silicious mass.
evidencIng yielding by pressure while
in semi plastic condition and bedded
form. The larger veins or reefs present
a somewhat quartzose appearance, in
termixed with slate and schist, with tho
usual frozen appearance. In some
instances considerable ore Is found, but
the amount of developments is so very
mesger that the actual conditions arc
but i'll determined. Throughout this
bedded plane occasional dikes of erupt-
i've rock of hornben die nature, pro
tude the bedded lines, but no quartz
mineral is found in them nor their i'm
neulate contact.
THE UPPRR PORTION OF THE BELT
presents quitea different aspect. Alter.
mating dishes of slaty schists and lime
stone with fewer outcrops of eruptivt
rock of grunitais nature are the chic
characteristics. The outcrops of minera
are very numerous and present u very
compact and prolific mineral region
The primary ores here are, in addition tc
phides of silver and carbonates of lead
The galena Is of considerable higher ten
ure of silver, and the zinc blende in some
instances exceedingly rich. Here tn,
mineral occurs almost exclusively in tn,
limestone, and little OF no quartz crop
pings are found. The limestone is MOI
the large massive stone occurring In Large
beds or zones, but of stratiticd slaty
structure, varying in texture and kind
from granular-cry stalline to soft com pac
magnetism varieties.
The outcrops of minerals occur in clos,
proximity to each other on the line o
limestone dikes which on the surface
form the genuine stone or matriX of thu
ores. From the meager amount of de
yelopments they seem to indicate vein
and ore chutes of considerable dimen
sions and importance. The lines tom
seems to be local and but cap" OF
the line of outcrop; the mineral, too
shows "A tendency to dry" ore of highe
grade. In most Of places fine granu
lar silica displaces the limestone an,
forms the matrix of the ore. The galcna
too, is displaced by dry ores, occurring
in the form of minute particles of sui
phides of silver evenly disseminate,
through the granular silica. 1t Is noticea
bic, too, that the greatest quantities o
ore are found on the "foot" or underli
of the limestone in its contact with tn
schist orc rock.
The promising prospects of the cam
are not confined to one or two lines o
contact, but to several parallel hues
With few exceptions the prospects O
each respective tier are of about tn
same general characteristics.
At many places ON the surface
especially In the limestones, great dea
sulphurizing and oxidizing the primar
ore to considerable depth, which, Ii
some, instances have been very mislead
| ing and the cause of the general repor
of "carbonates." Carbonate of lead
however, exists but little beyond speci
men quantities, and OF but little econ
omic value.
PROMINENT PROPERTIES.
Owing to the limited degree of devel
opments, observations, with few excer
tions, do not admit of individuslizin
the properties. Among the prospect
brought most prominently to notice ar
the Little Donald, SPOKANE" " SUN
light" "No. l." skyline" "Dellia'
and Gallagher The Little Donald ]
many respects differs from tn
features noted. Here the dcvelor
ments by shaft, sixty feet deep, and som
drifts, show large lode or ore. .bcarin
zone of several feet in extent. Through
out this zone or lode numerous seam
and veins of ore Of somewhat irregula
strength and continuity occur. Tn
ores of these seams and veins are galen;
with a tenure of about sixty ounces {
silver per ton and rs per cent lead; ais
a zinc blende varying from a sma
amount to several hundred dollars pt
ton, making in all a very protitabl
product.
tradistinction to the prevailing festur.
"slips" and nodules, stripping" fire
from it's casing The galena is a ma
vel of purity and perfection in it's lust,
and cubical cleavage. Eighty per Ger
of its contents being soluble matter, n
special line of outcrop is discernablc f
any considerable distance: The countr
rock on either side is micaous schist
occasionally blending into quartzit
That of the vein-filling is mixture
slate, quartz and highly magnesian linn
stone. The ore as taken out requires n
sorting" or "dressing," but is a hig
grade, marketable product One ci
load of rather poorly selected ore ga,
smelter returns of lis ounces Of silv,
and Is per cent lead per ton. Develop
ments are continued by inclined sha
following vein Of ore which, at dept
Of sixty-five feet, has attained width
nearly four feet. J. c. Davenport, we
seems always to be in the right place 3
tJ,a r;,ht t;,na rurch sed a one-half I,