Custer weekly chronicle. [volume] (Custer City, S.D.) 1890-1931, 1894-01-13

Va GranineS.
10. l'....,. ACKNOWLEDGEMENTS. Q 55
10 Z.'........ ........................ . ~
- o'''.'....'. ACKNOWLEDGEMENTS. 2 %
no. f..,........................ 2 "a
W o'.''....''. ACKNOWLEDGEMENTS. %
Original weight Of nuggets and coarse
Weight OF button after melting. ........ 40 90
The fineness of this button was de-
termined by assay in the usual manner
with this result
tioid ~ parts Of one thousand ... a3i gi
SILVER Ia parts Of one thousand. d......... $3.50
Daoe nieldlS' .''........................ IL.
1000 90
With this fineness the amount of pure
gold contained in the original button of
49.5 grammes would be, gold 1000 fine.
40 IL grammes, value at the mint of
5000.
Excluding the base metals present.
that were probably decided in great part
from Impurities in the quicksilver. this
gold bullion when refined would contain.
Gold IN parts Of one thousand .... o45 IN
S'''0' ." P"iV' VI que lnouSdnd' ''',"... %ii
,. 10000
This is very nearly twenty-five and
three fourths carats fine, or a value Of
sl945 per ounce. The averge ineness
OF the bullion from the quartz ores from
the Black Hills, is from 100 to $40 one
thousandtbs, while the fineness of placer
gold is much higher, frequently from
800 to 800 one thousandths, varying in
the different gulches in the mining
region. The first gold obtained from
the placers of Spring creek in 1875 as
sayed after melting and refining $40 one
thousandths gold. The extreme fine
ness of thAsA 10 aufI ,I L..
they are not quartz gold Of the char
acter usually found in the Black Hills.
The experience of the smelters and
public sampiing works of the west,
where thousands Of carloads of ore are
bought and sold has shown that the
money value of all ores may be practi-
cally deiarini aAa -hg s.-fll .s.--i:-----
mot 10 tie school Of mines, bot to any
other smelter or reduction works in the
country. and there sold, the value would
have been calculated solely on the result
Of the sampling and fire assays.
1t is asserted by parties interested that
whatever the origin of these nuggets
their value should be included in that of
the ore treated. Even were these mug.
gets to be considered as contained in
some nest" or pocket" in the quartz,
ed the repeated sampling of the three
ton lot Of ore, it would be manifestly
improper and misleading to include
their value in the report ofthe mill test.
Such a rich pocket might not occur in
mining many hundreds or thousands of
tons of ore, and TO add so great value
TO the average yield of so small lot of
ore, could but give an erroneous result.
a. l.. IL.
ing to Mr.. Moynahan the final official
written report of the results of the sew
eral mill tests (which said report is an
nexed to this statement and made part
thereof; the value of these nuggets was
not included in the average yield of the
ore from the Gold Hill mine. At the
time of the delivery of the report l in
formed Mr.. Moynahan and also Mr.. j.
II. Schenk, an owner in the property,
that a quantity Of coarse gold and mug
gets had been found in cleaning mp the
battery, detailing briefly the circum-
stances under which they were found,
and that l should refer the matter 10 the
board of trustees. particularly with re-
ference to the disposition that should be
made of this gold, so found. Subse-
quently Mr.. Schenk informed me that
he was not satisfied with the report of
the mill tests as made, and would take
an appeal on the part Of the owners of
the Gold Hill mine TO the board of trus-
tees and insist on the value of the said
nuggets being included in the average
Weld Of the ore in the written report.
In accordance with this appeal and to
decide the question Of ofownership of said
gold, a meeting Of the board of trustees
was called December %, 1898, by the
president, DIR. V. T. M'Gillvcudy, to
consider the matter. all of which is re-
spectfullv submitted.
w. p. JENNEY, r. NJ. PHI. D.
Dean of Dakota School of Mines.
Rapid City, South Dakota, December
q. 1898.
RAprp CRY, s. D., Nov. %, 1898.
Mr. ID. Moyuahan, Rapid City, 3. ID.
DFAR SIR The following are the re
suits of working tests made on the Gold
Hill and other ores delivered at the
School of Mines:
Process of working Each sample o.
4,O0D pounds was treated by crushing
and amalgamation of the free gold in
the stamp battery in the usual manner
| the tailings concentrated on Frue Van
ner, in order to save the sulphurets con
tanned in the ore.
During the tests, average samples were
taken for assay of the original ore, one
sample taken by cobbing the whole lo
by hand hammer, second sample 5y
taking one half Of each tenth shovefn
of the ore as fed to battery. Average
samples of the tailings from the Vannel
were taken from time to time and the
concentrates obtained were sampled by
"quartering' in the usual way. Briefly
the results may be summed as follows
The amalgamation Of free gold wal
very perfect; by repeated tests the tail
ings from the battery plates were found
A ~ N p.ha High est