ANGARA IRON / RAZDOLNAYA ANTMONY / YENISEI GOLD / KAZAKHETANSKAYA STEPPE GOLD COPPER AREAS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000500510106-5
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 10
• Document Creation Date: December 14, 2016
• Document Release Date: March 12, 1999
• Sequence Number: 106
• Publication Date: July 9, 1954
• Content Type: REPORT

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THIS Is UNEVALUATED INFORMATION
1. Angara Ir(.z District 1933.
a. Krannoyarsk.Aeposit (Map #1 1a)
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1) Looation - 56013'N/102005'E. Northeast of the village of Bratokoye is the
village of Aagar% un the Angara River~whieh In the Capital of the district.
About 16 miles upriver tiom Angara is the vilUag?_ of Krasny Tar. The
Kraany Tar iron deposit Lu located about 10 mile-i northeast of the village
of the eamo name.
2) a) The ore is magnetite. An area C8ee Enclosure A, Sketch #47 aboret 200 x
100 motors is high grade averaging 55% Fe. The balance of the orobody In
fine grained loam ore and will average 30 to 4c% Fe.
25X1 X b) At the ties - work had been confined ti exploration. The ore
had been partially blocked out to a depth of 250 meturn by aim ar seven
drill holes. Rough estimates indicate about 60,000 tone of direct
shipping ore per foot of depth that is 48,000,000 tons to about 800 Peat
depth and slightly more of 35% Pa vhieh might yie1d 21,00C,000 tone-of
60% Fe. The dip is nearly vertical. -I
3) The deposit is a contact mmotamorphic depanit and evidently deposited ender
high temperature oonditione am evideaoed by the presance of SCt-11tn end
other high temperature minerals. There has been little oxida::aa.
5) The major gangue mineral is quarts with Considerable {Old par.
416) The or# int udea rather flat lying beds of nanistone, limestone, and
in.rueive trap rock, h basic i cue intrusive. .^,ee section of Rudnayra
dapoait., Enoloeure A, Sketch The wall rocks have been nnetemorphceed.
They eontr,ip from 20 to 30% Fe and the ultimate raining li lts will bt
determined by assay.
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CENTRAL INTELLIGENCE AGENCY
INFORMATION REPORT
COUNTRY
SUBJECT
PLACE ACQUIRED
(BY SOURCE)
DATE ACQUIRED
(BY SOURCE)
Angara Iron/Rasdolnaya Antimony/Yenisei (bold/
KazakhBtaaskaya Steppe Gold Copper Areas
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or rn[ uwnm [r?ru. nrwiw rw[n?w.w. or ran[ u. [tcn.w. n.
?w. ).+. or rw[ u. . COOS. ?a ?rtw0[G. ITS ratr.NIS$.ON o. +[v[.
ur..w ar ITS cow r[w? ro o? .tct.rr .. ?w Yw?UTw.+i t[o ru.or n
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8) The geology is quite simple. There has been no faulting enfolding.
9) In addition to the two major deposits outlined Ly drilling, magnetometer
surveys in the wren have indicated some six or seven other aaomal{es but
all appear much smaller then the two large ones.
10) No radioactivity measurements had been madit up to 1933.
b. Rudmaya Oc+ra Deposit (M p #1, ib)
1) The Rudnaya deposit is located at about 57o18'N/lO3?55'E (Map #1) North of
the tom of Iliask on the Ilim River. It le the largest orebody in the
Angara area.
2) a) A vela of magodtite five kms. long with a maximum thickness of 120
meters has been drilled to a depth of 500 motors. The to of the vein
shoved no dismnition at depth.
b) The ore averages 55% Fe and is all magnetite.
c) A reserve of some 1,500,000 tons per foot of depth would be indicated
but about half this would probably be closer to the fact.
d) There had been na development in 1933-
a) With the exception of the lack of an area of low grade ore, and the
different size and shape, the description of the occurrence, mineralise-
tiou etc. ~rer for the Krasnoyarsk deposit can apply to the Ruda "&
deposit. L 1osure A, Sketch #3, a generalised section of the Rudnaja
orebody could be appl'uablc to either deposit.7
1) iP-aminations at the Angara deposits were made as part of the determination
of mineral possibilities along the line of a proposed railroad.
2) This railroad has since been completed from a pointy on the Trans-Siberian
railroad about half way between Kansk and Nishni Ydinsk easterly almost
paralleling the Trans-Siberian to the Okhotsk Sea.
d. Hydro Electric Possibilities
1) At the some time as the mineral examination, the question of building dams
to utilize the potential power in the rapids of the Angara river was
studied. The largest of these projects were the 'Padunnkiy Porog and
P'yanyy Porog, both rapids near the town of Bratakoye. Together these
represent a potential power resource greater than Dneprstroi. They were
not ' alt as the district was sparsely settled and there were no industries.
LMap # 1 See 1d17.
2. Razdulnaya Ani._mony Deposit, 1934-1936
a. Location 58?26'N/94?35'E (leap ?3, ea). It is about 30 miles north of the
Angara River near the town of F..-zdolinak.
b. 1) A vein 900 meters long and 20 Inches thick has been drilled to a depth of
250 meters. The are at that depth showed no change in thickness or grade.
2) The indicated reserves are 4,800000 tons of ore.
3) The grade of ore is 40 to 45%. antimony.
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4) The production is unknown but only 100-150 men were working indicating a
production of about 10 tons, or antimony per day. The ore is tipped
-'to Krasnoyarsk by boat. Production.stiarted in 1935.
5) Production is through as edit driven fat an; elevation of about 30 meters
above the ad3reent river with a- ventilattcia ehact 65 meters deep near the
end. Enclosure B, See #6 and #V. The dip is almoat vertical. A new
shaft has been started near the river.
e. The ore occurs in a clean uniform .vein- There is no indication of more than
one period or deposition.
d. The only gangue mineral is quartz.
e. The caly metallic mineral is antimonite (Stibnite) Sb2S3. Oxidation has
extended only to a depth of 10 afore. . In the oxide zone the antimny has
been replaced by iron oxides.
f. The wall rocks are Algonkisn schista. There are no volcanic rocks in the
vicinity. The wall :rode is,-rather., herd but :the drift requires timbering
because of its fractured condition. The contact is sharp between ore and
wa3.1 rock. The voi?. r ok has serictie and abletjtio alteration' products only.
6. There are gold deposits in the vicinity but little activity at present. One
gold mine was- worked underground before 1900. There are no other known
antimony deposits in the area.
h. No attempt to find radioactive, material?'had been iaada?in 1936.
3. Yenisei Gold and Tin Area (Moe #3, No- 3a)
a. The Sor.stskiy Rudnik (gold mine) at the headwaters of the north branch of
.the Pit river about 59o50'N/94o2011 hen be0 dea?3'tbed in detail by Protege*
? Gornoetayer about 1935.
25X1 X b. in an effort to- fin& the source of the tin which 25X1 X
is Sound, in rather well quantities, in the alluvial stream dopoaite,llllllllllllldid
find tie pagmatitos from which this tin vas derived. Althoegh thbre is K '
huge man of pegmatite, the $rude is so low that there to little chance of
their ever being of eeonooic interest.
4. Kgzakhatanaknye Steppec0old?Area (1938 L 1939 - 1940)
This is a large area between Latitudes 51-531or/70-74?E and Longitudes 69 to 'Tk?k
(Ni a5).
a. Stopnyak Mince (!Maps #4 and #5 - 4a; Enclosure C, Sketch 9)
1) Location - There are 12 known veins In the Stepzpalcarea near the tevwa of
Sorovoye at 53?08'N/70?20'E.
2) Ore - Grade - Production - Reserves
a) The mine in the Stepnyak crew are all seined for gold.
b) The grade of ore mined in 1938-1940 was from 25-30 grams per metric ton
(roughly one ounce per tot). The g:a~P of ore previously mined from the
oxide zone was considerably higher.
c) The production before 1934 was about 3 tons gold per year. After 1935
to 1940 it was about 2j tons per year..
d) The reserves in 1940 at an annual production of 3 tons of gold were
sufficient to last 10 years.
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3) The veins are mez:zothermal deposits associated with Intrusions o1 granite
stocks into sandstone., Both low and high temperature minerals are found
in, the gangue. The gold is mainly deposited along the sides of the reins
with low values (two to we grams) per ton extending into the.rall rocks
in small one millimeter strins,*rs. At one time.it was planned to mine tht
wall rock with the richer vein natter but this plan m$s not adopted. The
vein contains much breccia from the walls and the gold is deposited on these
breocia particles. There are five large veins and 12 smaller ones known.
The largest, the International, was about 1000 meters long, 25 to 30"
thick.
5) As mentioned, the oily mineral of economic importance is gold. Antimonite
and schelite occur and there are small quantities of lead, zinc, and
other minerals. Oxidation in the upper 130 meters has replaced most of
the original vein material with clay and iron oxides.
8) The geology Is quite complex. There is a major fault which cuts across
thr..aree from SW to I. The Ceorgievsk Mine has been out by a fault as
shown in.cross section Sketch 10, Enclosure J but this fault appears to
have been pare miner--I as belov it are three small veins vetch contain no
values beyond 40 to 50 meters below the fault, while above the fault is the
main rein, Upping at 25? degrees which outcrops. The vein at the Internat-
sional dips at 25 to the Northwest and is expected to continue at least
me ran as the sandstone contact of the granite and sandstone.
9) There are other mines in the vicinity but they are small.
10) No radioactive minerals occur so far .-4s known but there had been no
attempt to explore for them.
11) Mining
The active wines in 1940 were the Ooorgievak with a 600 m. long stein? This
mine has been almost mined out at 350 ms: depth sea.. #1O: Enclosure. 07.
The Internatsional - 1000 ms. long by 20 to 30 inches thick which shows no
sign of dimmnition at depth.
The lot May mine with a 600 meter long veiq, now working. The Oktyabrek
Mine which is a large lowgrade working with a length of 12Q0 meters along
the strike.
The small mine Northeast of the Oktyabrsk in the sandstone was out off by
a northwestward dipping fault.
There was a cyanide mill at the Internatsional mine`and all ore was treated
there. The mines were well equipped and supplied with electric power and
compressed air. Hoisting was done through inclined shafts. The wall rock
stands well. The mining method was overhand stoping. Only occasional
atolls were necessary. The mines were wet near the surface but there was
much lese water at lover depth. Mining has been carried td a depth of
350 meters. Mast of the ore now comes from the Internatsjonal. There are
between 5000 and 6000 men working at the mine, mill and town.
b. Dzhalaznbet (Map 5r 4b)
obtained ^ information from other geologists
1) The character of ore is smite simil .r to the Stepnyak ores. The deposits
are younger and there are more fissu es. In sic. the deposits are larger.
They have act been developed to the same degree as the Stepnyak mines.
2) The production is about two tons per ye:..? but is increasing.
idea how many are emp'Dyed but do know it i, several thousand.
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C. Sta].insk Deposit (Map 4, 40
Other deposits in the vicinity have ores and veins ei011er to Stepnyak but
the veins vas smaller although there are more of them.
d. Bea-Tyube Deposit (Map 5, 4d)
one ton per year.
The veins in the Bee-Tyube are ofthe same general type as the Stepr4ak vaias
but bave.been formed at temperatures up to epithermal.
This is a large area but in the exploratory stage. It is the youngest of
the five razakhatanskaya districts.
The development has not extended deeper than 100 meters. The veins are all
in the oxide zone and values run between 30 and 35 grams per metric ton.
4) The important gangue mineral is antimonite. Quartz and high temperature.
minerals are common.
5) In the oxide zone the vein minerals have been replaced by iron oxides.
6) The wall rocks are sedimentary and granite. Are is found in the granite
and the adjoining sandstone.
7) There are many veins'but no, data as to size or shape.
8) There are many faults.
e. Nurinsk Deposit. Yxact location unknown,, but Southeast of Des-Tyube
- sever visited this area.
It has only been worked a few years.
The ores are similar; quartz associated with granite iatrusives into sedis"oztts.
The veins are small but high grade 25-30 grams per metric ton, The produ::tion
is only a few'kilograms per year.
f. Maykain Area (Map 5, 4f)
1) The Maykain Area is not strictly within the KazalFhstanakaya Steppe Area but
to the east. The deposits are quite dissimilar to the Kazakhatanskeyra
type. They are copper gold veins, 15-25 meter thick, 600-700 meters 14
and have been drilled to a depth of 250 meters. The drill1,shord ;
20-25 gre/mt gold and almbat halt the drill core in the vein. was Copper Are.
A cyanide will was built to recover the gold but. had trouble. Considerable
gold could be recovered by amalgamation,
2) There is dissagreement among Soviet geologist, as to whether it is R vein
or replacement deposit.
3) The gangue minerals in the oxide'zoue have been replaced by iron oxide. In
the unoxidized ore they are chalcopyrite and pyrite with some quartz.
6) The wall rock is limestone, schist, and sandstone. The wall rock has
definitely been altered by high temperature of vein formati.:~n.
7) The vein is almost vertical. at the surface,
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The oz is sinui]ar to the other are" _escribed. The ore is rich but not '
large and the end is probably in eight. ? The production is now (1939) about
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8) There are many -faults and the rocks are folded.
9). In the general area of North Kazakhstaaskaya f+ll the deposits have been
described in USaR teghr_ical pa;bltcations. There are over 14,0 copper or
gold deposits, Some are of the same type as Stepnyak and others similar
to Dfaykain. All :ere worked at some time. in the remote past but at the
preseut time 1 W) they arc. almost unexplorad.
Enclosures (A) #3 Sketch showing a generalized section of Rudnawa Gora
(A) #4 Sketch plan of the Krasaoyar6k ?nine
(B) #6 and #7 Plan and Section Razdu-nays Arsine
(a) #9 Plan of the Stepnyak Mines
(C) #10 Sketch showing a Gros --tion?of the Stepnyak Mine
f1vailable at the CIA Map Library are four maps showing the location of mince
aad rapids described in this report.
1. UST-KUT Sheet US IM. scale. 1: 1,000,000 showing location of iron mines in
Angara districi? Also shows water power sites near Bratskoye. Map call
number -? RR1F~
3. KRASPDY_ARSK Sheet USSR. Scale 1: 1,000,000 shoving location of antluoa~r
dcpocit at Razdolinsk?and gold mine of headvators of Pit River. Map call number
88161-R.
4? PB'i1iQPAVLOV:',K Sheet USSR. Scale 1: 1,000,,000 -showing location. of Borovuyv
gold district. Map call number - 88160-R.
5. Photostat of Kazakstanskaya area USSR showing location of gold districts
and Maytain copper gold district. (It as not possible to pinpoint the
location of Murinsk District) Map call number - 88163-R.
To borrow maps call code 143, ext. 2596.
-end-
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ENCLOSURE (C)
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1NE5T.Ei 'N I/,E/N Small I-nine
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