The Cheyenne daily leader. [volume] (Cheyenne, Wyo.) 1870-1884, 1875-12-06

l3y.1 tains. 5a-h
The Wonderful Deposits of Soda in the
.21oCb gnu Plains otal
Farming and Grazing Lands Along the
2yi'N sweetNaier. ElU
HHHHa 49,
special Ger espondeuce Of the Inter-ocean }
FORT PRED STEELE. Wyoming
Crossing the North Platte al
this point and travelling a few miles
be he Union Pacific railroad, To the
west, turning the eye Ia the north
Best, the-SFminnle range OF noun
staIus comes INFO ptdn view.
At The Seminois is a part nf a range OF
mountains hat rise up to the north OF
North Park, in the northwestern part
nf Colorado. Their course is north
for 100 miles, when they turn almost
abruptly 10 the west, and then beAr-
ing to the northwes I, a e lost in the
Wind River range OF munntains. The
,portidDi King west OF the grind Capon
iof the Platte river is known ~ the
true Seminole range. This chain Of
mountains rises up quite abruptly
from the great plains To IA height of
nearly 5000 feet, ON M average, over
M entlrs teBiolh .TE
The nuclens ofthis mountain range
Is n granite in some places, while in
others, greatmetiiuOrphism Is appar-
ent; aQd we find gnriss. t~alcu-e, and
micacious slate aud chluritic states
constitute the mountain range.
In 1869, silver mines we're found
about ten miles wrist of the PEittr
river and but 33 miles north Of Fort
Steele. Ores taken from these dis
coveries carried $50 to $500 per o
silver. a year later, the discoveries
that had been made and limitedly
wUfkedss silver deposits, proved tn
1contain aOfe igOkl than other ones.
1u the csnrseiof aH examination the
writer made over this region in the
past few months. quartz containing
pure gold WAS picked up in more than
fly localities.
There has been found thirteen fis-
4, sureS veins. only one of which is now
being worked. An old ten-stamp
mill is running five stamps with an
engine power sufficient TO run two
stamps. With this old trap $50 to 500
laBd $40 gold per ton il taken out.
-Tailings from the mil! yielded $40
gold per ton. This is the locality
known M the Seminole mines, where
the first discoveries were made. The
yeiasY carry quartz "a a gaugue of a
deep copper and purplish brown
color, sometime approaching nearly
TO a pure white.
The metamorphism Of the rocks
Where thp veins occuri has been very
suong,f and the rocks have been
Ibrought DIP FROM a very great depth.
The deposition of the ores may be
classed under three heads: /. From
injection from below. 2. BY vnpOr5
ascending up through the openings
or veins IN the metamOrphOsed states
or other rocks. 3. BY hot water
siliciOnsS solutions containing mine
rails, Witch reached these veins and
assures from above; and as they set
tied into these openings, probably
while the upheave was progressing,
crystaiized: aud we have gold, silver,
copper, autinony, lead, plumhago,
ir u, catlinennl, and other minerals.
Thesoresas sulphurets, were formed
by the sulphuretted hydrogen of the
atmosphere combining with the miu-l
eral in the solutions.
For one hundred miles along this
range, the three propositions can be
entertained and probably sustained.
Where the heat reached II point
great enough to lcrystalize tho gnris-
sold roeks, The evidtnce Of tine filling
of The assure by injection is Consist
emily established. In the next zone
of heated solutions within the earth,
where metamurphism strongly shows
itself, the vaporous depusItInns took
place. SPhc uepuslu0ns Ihat took
place ffotnh above and lie mostly in
chloritlc, micaceOus, and talcose
states, with iron pyrltes in combiua-
ton, were evidently in the least met
amorphosed belt, but the ores prove
to be the richest OF the three.
Passing to the northwest of the
Seminole mines, there is traceabIe
along the range numerous quartz
veins of IA deep ferruginOus cOIur, in
many of which gold al be found.
BY the Course of the range, ana not
more than fifteen miles from the
Seminole mines, there is Il VEIN of
puzzle quartz carrying bromide Of
silver in rich, Laying quantities. y
specimen, selected without any re-
gard TO picking the best from the
vein, gave S294.3l per ton silver. In
this ore there IS very near AN equal
quantity of iodine with the brOmIne.
'Ihe specimens show little masses of
enboqter and a very rich chlorO-
broihfde OF silver thai can be cut with
the knife as easily as horn silver.
This locality has never in the least
been prOspected.
With Il knowledge of the richness
of the Seminole mines already par
tally developed, The question ran be
most reasonably asked, "Wny are
not these mines more extenSi e
worked and the range pruspected?'