Phoenix weekly herald. [volume] (Phoenix, Maricopa County, Ariz. Territory) 1896-1899, 1898-11-24
GOLD AND LEAD MINES IN
SOUTHERN RUSSIA
Written or the Engineering and Min
inc Journal hY e Helnh clSer

Written or the Engineering and Min
ing Journal by R. Helmbacker
Gold bearing veins were discovered
as recently as 1898 in the territory of
the Don CossackS in a range of hills
running from west to east known as
the Nagolnu Kriage. Cod was found
in this range in two places. the first
near NagOlchick. the second about fif-
teen kilOmeter-S southwark. near a lit
tie village called Bovrik-Petrovskaia
The country rock is m;caceous sand
stone. coarsely or distinctly strai;ified.
With in-erstra titled clayey States. show
ing some anticlinal folds, Through
these rocks extend series of parallel
quartz veins. varying from TO en-. to 3
IN. in thickness. and dipping almost
perpendicular. These veins include
some limonite and pyrite: while below
the outcrop the vein mass is accom-
panied by chalcedony, which probably
gave rise to the limon'te on the sur
face by its decomposition The quartz
veins are occasionally DISRUPTED by
slides or faults parallel to the slate
strata. There is no visible gold in the
outcroTs. though a short distance be-
low gold is visible in small particles
AT a greater depth the free gold dis.
arrears although the TENOR in the met
al is higher. Thus far - gold hearing
veins have been traced for distances
varying from 20 TO $50 m. The great
est denth reached in developing these
has been 81 m. The gold tenor varies
from > to IS ; gram to the ton 1t is
proposed TO develop these mines to
some extent. in order to ascertain
whether They are worth working on a
large scale
In the same ranee-the Nagolnii-
liTiaje: lead-zinc-silver ores were
discovered in 1875. Those ores We're
worked both by the Crown and by
private explorers for over 80 years.
hut We're finally abandoned in 1884. as
they did not pay. In the year 1890
Son'e specimens We're found uron the
surface near the old mines which led
10 the discovery of several pew veins
and also TO the reopening and explol-a
ION Of the old mines The veins work
cd are near the little village of NagOl
laia. where a mine has, been onened and
! good deal of respecting work done
!he country rock interse cted by the
ems. is sandstone and slate. very sim
'ar TO those in which the god hearin"
rein above referred TO are found. The
,ocks are much disturbed. and dis
laced by faults. The ore depoStts are
generally assure veins flied Will
4
| Erection orDosfte 10 the slore of the
nndstone strata There are also som,
ems trayefs'ng The strata in an oh
| rOue direction. The former carr
.biefly galen;te: the latter some galen
| tie and also zinc ore. There are als'
F.! I few lenticular deposits.
| The work begun in 1890 and 1S93has
| -ontinued and a shaft has been carried
| o n depth of 30 m. The veins have
| zen found to vary from - to 80 en-
IT thickness. carrying from 10 to 81
! m. of galenite. Other minerals foupC
n the vein are sphalerite. OCCASIONAL!
| write and arseno-pylfte and rarely an
'llesite. The gangue, as already notet
s quartz with some calcite.
To develop these mines the govern
nent has made considerable advances
| Besides the shafts mentioned tire,
others have heen sunk and consid
| nrable amount of work has been don,
Ii drifts from these shafts. besides
he store from which the ores hav,
| zen taken. \ number of building
We been erected ait the mines and +;
ncif n hi