H
52
01
31 16 01N
130 37 57E
Fe
Ti
Ibusuki
Placer Fe
Average grade of 22% Fe and 3.7% TiO2.
Consists of a large number of placer deposits along beach. District is 60 km long on Satsuma Peninsula side, and 20 km long on Osumi Peninsula side around Kagoshima Bay. Eight subdistricts ocuur in the district. Placer Fe minerals occur in modern beach s
Geological Survey of Japan, 1954.
Japan
I
33 36 12N
131 42 37E
Kunisaki
Average grade of 15% Fe.
Consists of 13 main placer deposits along a beach. Main part of the district is about 30 km long in the Kunisaki Peninsula, Oita Prefecture. Major deposits are at Yasugahama and Tomiku. Placer Fe minerals occur modern beach sands. Thickness of deposits i
Geological Survey of Japan, 1954; MITI, 1959, 1959; Hasegawa, 1963.
53
35 41 57N
140 42 05E
Iioka
Average grade of 10.4% Fe and 2.4% TiO2
Consists of two major placer deposits along beach. District is about 10 km long and 1 km wide. Each body is 3 km long, 70-100 m wide, and 2-10 m thick. Four major mines are in the district. Placer Fe minerals occur in coastal plane deposits, coastal terr
35 26 51N
133 17 30E
Yonago
Average grade of 24% Fe and 3.2% TiO2.
Consists of a large number of placer deposits along a beach that is 80 km long from Tottori to Yonago. Major deposits are at Yonago, Takaraki, Hamamura, and Kaike. Yonago deposit is about 7 km long and 30 m wide. Thickness of the deposits is typically 0.
Geological Survey of Japan, 1954; MITI, 1958, 1959; Hasegawa, 1963.
J
51
39 30 00N
122 10 00E
Diamond
Toudaohe area, Fuxian County
Placer diamond
Small
Average grade of 20 to 30 mg/m3 Au, ranges up to 70 mg/m3 Au.
Placer diamond deposits are River valley type and are divided into 4 subtypes. The ore beds consist of of yellow-brown mild clay and/or sand and gravel beds. The total thickness of the ore beds is 5-6 m. Clay-bearing sand and gravel beds contain more pla
Deng Chujun and others, 1994a, b.
China
02
37 10 00N
121 30 00E
Au
Jiaodong (East part of Shandong Province)
Placer Au
Moderate to small.
Reserves of 6 tonnes Au.
699-999
Areas consists of low mountains, hills, and planes in that many short Rivers drain to the sea and form a dendritic water system. More than 20 placer Au deposits occur and have been mined since ancient times. The best placer Au deposits are adjacent to pr
Chen Jiming and others, 1997.
36 58'00 N
126 48'00 E
Hanjin
Average grade of 0.167gms/yd3 Au.
Reserves of 191 kg Au.
Placer district is underlain by mica schist, quartzite, and limestone that are intruded by biotite granite with some quartz veins. At high tide, district is covered with sea water. Generally, the deposit is low-grade placer but locally high-grade. Thickn
Park and others, 1964.
Korea
36 45 30 N
127 14 00 E
Sungnam
Medium
Average grade of 0.077-0.184 g/yd3 Au, 1.067-5.669 g/yd3 fergusonite.
Ore reserves of 3,857kg gold and 76.5 tonnes of fergusonite.
Placer district is underlain by granite-gneiss intruded by two-mica granite, of probable Precambrian age. Younger diorite, quartz-veins, and pegmatites, up to one to two meters wide, occur in the area. Granite gneiss forms small hills 100 m or less high
Hwang and Choi, 1961.
03
36 42' 30 N
127 03 00 E
Asan Bay
Average grade of 0.190 to 0.253 g/yd3 Au.
Reserves of 1,748 kg Au.
Upper course in district contain minable gold placers with many nearby lode gold mines. Two wide alluvial basins contain mostly clay, and are very wide. Average thickness of alluvium is about 9.8 m with a sequence of surface clay 7 m, clay and sand from
Lee and Yoon, 1970.
04
36 38'00N
126 42'30E
Kumma-chon
Grade range of 0.05-0.27 g/yd3 Au.
Reserves of 1,236 kg ore.
Consists of ilmenite and gold placers that are underlain by coarse-grained granite gneiss of probable Precambrian age. Younger quartz veins and pegmatites 0.8 to 2.5 meters wide occur in this area. The granite gneiss forms small hills 120 meters or less
C. I. Choi and K. B. Kim, written commun., 1963.
05
36 32 30 N
127 27 50 E
Musim-chon
Average grade of 0.260g/yd3. Au.
Total reserves of  1,992 kg Au
District about 100m wide and extendd south to north for 11.5 km along the stream. Average thickness of alluvium is about 15.4 ft (4.8m). The deposit overlies Precambrian schist that is intruded by coarse-grained Jurassic biotite granite and lamprophyre.
J. K. Lee and B. C. Kim, written commun., 1969.
06
38 17'30N
128 33'30E
Th
REE
Koseong
Placer Th
Average grade of 2,586 g/m3 monazite and 44,100 g/m3 ilmenite.
Reserves of 56,654 tonnes ore.
Consists of ilmenite, monazite and zircon bearing placers that occur along the shore ine in Hyonnae-myon, Kojin-myon and Kansung-myon of Kosong-gun, and Chuckwang-myon of Yangyang-gun, Kangwon-do areas. Country rock is mostly Precambrian mica schist and
S. K. Yoon, I. C. Hwang and Y. H. Chang, written commun., 1959.
54
38 32 50N
141 09 11E
Kitakami
Placer and paleoplacer Au
Nishimikawa district contains historical placer deposits. Gold was discovered in 749 from this district. First placer deposit located at Koganehazama in Wakuya town, Miyagi Prefecture. Deposits were exhausted in historical time, and not much detailed inf
Watanabe, 1939; Watanabe, 1950; Oide and others, 1989.
37 54 21N
138 19 47E
Nishimikawa
Nishimikawa district contains at least 32 alluvial placer deposits. Gold occurs as paleoplacer deposits and placer deposits. 16 paleoplacer deposits occur around Sasagawa village, and are hosted in sand and conglomerate of the lower to middle Miocene Ori
Kosuge, 1988; Mining and Materials Processing Institute of Japan, 1994.
K
48
42 01 20N
104 54 00E
SnO2
(Mn,Fe)WO4
Khar Morit
Placer Sn
Average grade of 500 g/m3 SnO2.
Reserves of 7,090 tonnes SnO2.
More than 10 valleys with placer deposits occur around Khar Morit Mountain in a region of moderate relief. Most placers are near-surface alluvial deposits in first-order stream valleys, forming single Holocene stratum concentrations. Multiple pay layers
E. Iotov and others., written commun., 1972; N.A. Marinov, written commun., 1977.
Mongolia
49
41 30 00N
110 30 00E
Yinshan, Inner Mongolia
Occurs in Yinshan Mountains and the drainages of the branches of the Yellow River. Many placer Au deposits in the area are alluvial, alluvial-deluvial River channel, and River flat types. Scale is usually small. Together with the placer Au in the Yanshan
40 09 40N
141 42 56E
Kuji
Average grade of 23.0% Fe and 5.8% TiO2.
Consists of Pleistocene placer and paleo-placer deposits. Main part of the district is about 16 km long and 4 km wide, and is in western part of Kuji city, Iwate Prefecture. The Pleistocene Formation consists of sandstone, is about 30 m thick, and forms
50
41 10 00N
118 30 00E
Pt
Gaositai
Placer PGE
District located in the Damiao V-Ti-Fe-bearing mafic-ultramafic rock belt in Hebei Province. Placer Pt occurs in Quaternary River channel and placer terrain deposits. Conglomerate beds of the terrain deposits consist of Ti-magnetite, galena, chromite, an
Xu Enrong and others, 1994.
40 30 00N
119 30 00E
Yanliao
Occurs in mild to low hills of the Yanshan Mountains. The main River systems are the Laohahe, Dalinghe, Luanhe, and Shangganhe Rivers. Placer Au deposits are widely distributed in the area, and are deluvial, alluvial-deluvial River channel, River flat, a
40 54 08N
141 23 08E
Kamikita
Average grade of 17.3% Fe and 3.0% TiO2.
Consists of a large number of placer deposits in eastern Aomori along the Pacific Ocean. Main part of the district is about 40 km long and 0.5 to 1 km wide, and occurs between Sabishiro and Tomari. Placer Fe had been mined in five locations in the distri
123 25 00E
Liaodong (Eastern Liaoning Province)
590-877
Deposits are scarcely distributed in the tributaries of the Liaohe, Taizhihe, and Yalujiang Rivers. The Zhongtanghe area along the Zhongtang River, that belongs to the second tributary of the Taizhi River, contains several small-moderate Quaternary alluv
Feng Xishan, 1991.
43 15 00N
130 17 00E
Hunchun-Huadian, Jilin Province
Placer Au and paleoplacer Au
843-872
Occurs in Changbaishan Mountains in eastern Jilin province with three large water systems-Yalujiang, Tumenjiang, and Songhuajiang Rivers. In 2nd to 4th order subbranches, placer Au deposits are widespread and have been mined for a long time. These includ
Liu Baocheng and Yuan Li, 1994; Chen Jiming and others, 1997.
43 54 45N
142 05 58E
Pt, Cr, Au
Horokanai
District consists of alluvial PGE and Au placer deposits. The size of the district is 45 km by 30 km, elongated to NS. The deposits are underlain mainly by serpentinite of Kamuikotan belt. The placer deposits occur in Uryu River and Inushibetu River, a t
Geological Survey of Japan, 1955; Saito and others, 1967.
43 02 35N
142 09 38E
Pt, Au
Shirokingawa
District contains alluvial PGE and Au placer deposits. Size of the district is 70 km by 40 km, elongated to NS. The deposits are underlain mainly by serpentinite of Kamuikotan belt. The placer deposits occur in Shirokingawa, a tributary of Yubari, Sorach
Suzuki, 1950; Geological Survey of Japan, 1955; Saito and others, 1967; Nakagawa, 1994.
42 33 21N
140 09 43E
Imagane
District contains alluvial placer deposits. Dstrict is 25 km by 20 km. Deposits occur along Toshibetu River. Two main deposits occur at Meppugawa and Toshibetugawa. Placer gold occurs in alluvial deposits in the River. The deposits are underlain by Paleo
Saito and others, 1967; Kato and others, 1990.
42 26 55N
140 19 43E
Funkawan
Consists of a large number of beach placer deposits. Main part of the district is about 18 km long and 0.5 to 1 km wide, and occurs between Oshamanbe and Kuroiwa. More than 20 deposits have been mined. Major deposits are at Kunnui, Oshamanbe, Nakanosawa,
Geological Survey of Japan, 1954;  Saito, 1967.
41 33 34N
140 12 45E
Matsumae
District consists of alluvial placer deposits. District is 25 km by 25 km. Placer deposits occur in Rivers around Daisengendake Mountain. The main deposits occur along Shiriushi River. Placer gold occurs in alluvial deposits in river and alluvial terrace
L
45
47 30 00N
89 20 00E
Altai, Xinjiang
Moderate
10 tonnes of gold  produced in 1951-1942, and 33.9 tonnes of gold produced since 1980. Predicted gold reserves are greater than 30 tonnes.
997
Six mines are in operation. First order drainage systems are the EW Erqisi and Wuluohe Rivers. Third to fifth order branches usually have placer gold. Moraine placer Au deposits are several tens of km long, 40 to 120 m wide, and 3 to 15m thick. Grade ran
Lu Yingjie and others, 1992; Chen Jiming and Others, 1997.
47
46 25 00N
100 07 00E
Dovont
Placer  Au
Average  grade of  580 mg/m3  to  1015 mg/m3 Au.
Production: 0.02  tonnes  Au  in  1992,  0.117 tonnes  in  1993,  0.131  tonnes  in  1994,  and  0.147  tonnes  in  1995. Proven  reserves of  6.2  tonnes  Au.
887 - 943
Occurs in the middle part of the Bayankhongor metallogenic belt, in the Dovont Mountains. Most placer Au deposits are alluvial-proluvial type, and minor alluvial type. There also are several manmade placers. Alluvial deposits are older than the alluvial-
D. Andreas and others,  written commun., 1970; Mormily  and  Tegshil,  1971; Blagonravov and Shavolovskyi,  1977;  B. Bat-Oroom and others,  written commun., 1980.
46 27 05N
102 22 05E
Uyanga-Taragt
Average  grade of 845 to 1100mg/m3 Au.
Production of 0.6  tonnes  Au  in  1993-1995. Reserves of  4.5  tonnes  Au.
840 - 860 (average  853 )
Occurs in the middle part of the East-Khangai metallogenic belt in northern valleys of the upper part of the Ongiin-gol River. District strikes NW-SE, is approximately 40 km long, and 30 km wide. Bedrock is mainly Early to Middle Devonian volcanic, sedim
D. Urtnasan and others, written commun., 1970; Blagonravov and Shavolovskyi, 1977; Ch. Baadai and others,  written commun., 1992.
47 07 05N
107 17 05E
Baruun -Urt
Average  grade of 1.0 g/m3 Au.
Production of  0.5  tonnes  in  1994 and 1995. Reserves of  1.5  tonnes  Au.
Occurs in SW part of the South Khentii metallogenic belt, strikes NE, and is along the North Govi fault zone. District is approximately 50 km long and 30 km wide. Bedrock is mainly early Paleozoic clastic rock intruded by small early Mesozoic granotoids.
Sanjsugar, written commun., 1988.
47 42 30N
107 35 00E
Janchivlan
Averade grade of 500g/m3 SnO2.
More than ten Sn placer deposits, such as the Janchivlan, Baatar, Bayandavaa, Elstei, Zuun Elstei, and Avdrant deposits, occur in the Janchivlan district. The placer deposits occur in first-to third-order stream valleys. Pay zones of late Pleistocene to
M.G. Korolev and others, written commun., 1955;  G.Y. Borodyev and others., written commun., 1960; E.N. Chetverikov and others, written commun., 1975; Bykovsky and others, 1977a, b; B. Baasan, written commun., 1988.
46 15 00N
106 01 30E
Baga Gazar
Averade grade of 500 g/m3 SnO2.
District contains at least three placer deposits. Main resources occur in valley bottoms of first-to second-order streams, mainly in Recent alluvial material. Thickness of ore stratum ranges from 2.5 to 6.5 m. Width of alluvial placers ranges up to 130 m
G.Y. Borodyev and others, written commun., 1962; N.M. Zasimovskii and others, written commun., 1955;  B. Baasan, written commun., 1969; N. Buyan., written commun., 1969; Khasin and Zakhai., 1977.
47 46 30N
109 07 45E
Modot
Reserves of 7,012 tonnes SnO2. Averade grade of 320g/m3 SnO2.
Placer tin mined from modern streams and benches. Khyjikhan area and Bayan Mod basin are most productive. Heavy minerals include cassiterite, wolframite, fluorspar, molybdenite, gold, magnetite, scheelite, and pyrite. Placers range from 5-7 km long and a
Bykovsky and others, 1977a, b; L.E. Esipov and others, written commun., 1978; E. Jadambaa and others, written commun., 1989; D. Erdene, written commun., 1990.
47 10 00N
130 30 00E
Jiayin
Large
Production of 80 tonnes Au from 1920-1995.
877
The placer district covers 26,000 sq.km. and belongs to the systems of Heilongjiang River (including tributaries of Sunhe and Jiayin Rivers), and the Songhuajiang River (including tributaries of  Dulu, Wutong, and Tangwang Rivers). Placer Au deposits are
Lu Yingjie and others, 1988; Chen Jiming and others, 1977.
46 20 00N
130 55 00E
Huanan
Reserves of up to 80 tonnes Au.
820
District covers 28,000 km2 and belongs to the drainage area of Mudanjiang and Weikenhe Rivers and their tributaries (these rivers are also the tributaries of the Songhuajiang River), and to the drainage area of Mulinghe River and related branches of the
Lu Yingjie and others, 1988; Chen Jiming and others, 1997.
44 30 00N
131 00 00E
Dongning
775-920
District overs 1,100 sq.km. and belongs to the water systems of the Wusulijiang and Shuifenhe Rivers and their tributaires. The deposits are alluvial, alluvial-proluvial valley flat and valley terrace types. Au mainly derived from gold occurrence in meta
Lu Yingjie and others, 1988.
45 02 03N
142 05 11E
PGE, Cr, Au
Teshio
District consists of alluvial PGE and Au placer deposits. The size of the district is 60 km by 20 km, and is elongated NS. The deposits are underlain mainly by serpentinite of Kamuikotan belt. The placer deposits occur along the Makanbetu River. Main dep
Suzuki, 1950; Geological Survey of Japan, 1955; Saito and others, 1967.
45 02 16N
142 26 34E
PGE
Esashi
District consists of alluvial placer deposits. The size of the district is 25 km by 25 km. The placer deposits occur along Usotan, Tonbetu, Peichan, and Horobetsu Rivers. Alluvial terrace deposits also contain minor Au. The deposits are underlain by blac
Saito and others, 1967.
47 57 37N
142 15 57E
Il'inka River
Gold is fine-grained, 0.2 to 0.3 mm. Heavy-mineral concentrate consists of chromite, epidote, and garnet. Small gold-cinnabar occurrences are presumably sources for the placer. Deposit occurs along the Il'inka River where it discharges into Tatar Strait.
Sidorenko, 1977.
Russia
47 48 00N
139 26 00E
Sc, Rare Erth
Koppi-Nelman
Placer Ti
Beach placer with reserves of 1,125 thousand tonnes titanomagnetite, submarine placer with reserves of 11.3 million tonnes of titanomagnetite.
Occurs along sea shore of Tartar Strait. Two types of placer deposits were explored. Sea-beach gravel, sandy-gravel, and sandy material includes layers and lenses of placer titanomagnetite. The placer is 100-1400 m long, 5-150 m wide, and 1 to 5 m thick.
Onikhimovskiy and Belomestnykh, 1996.
M
46
49 30 00N
91 53 00E
Burgastain-gol
100 to  2,000 mg/m3.
Proven reserves  of  1.2 tonnes  Au. Prognostic  reserves  of  5 tonnes Au.
Occurs in western part of the Nuuryn metallogenic belt along the major Tsagaanshiveet fault zone. Occurs in the Burgastain-gol River Basin. Main placer Au deposits are at Burgastain-gol, Shuluun-bulag, Talynsalaa, and Khorlhoitynzag. This placer deposits
O. Jamyandorj and others,  written commun., 1977;  N.L. Shubin and others, written commun.,  1985;  L.V. Chistoedov and others,  written commun., 1991.
49 25 00N
107 22 05E
Yoroo-gol
Average  grade of  0.3 g/m3  to  2.46 g/m3 Au.
Production  from  0.4 tonne  in  1974; 0.37  tonnes  in  1992,  0.47  tonnes  in  1993,  0.42  tonnes  in  1994,  and  1.3  tonnes  in  1995;   9.7 tonne  from  1974  within  1995;
Proven  reserves  of  20 tonnes  Au
880  to  960
Occurs in NE part of the North Khentii gold belt along the Yoroo-gol and Khuder River basins. District strikes in NE direction, and it occurs in the Yoroo-gol major fault zone. District is approximately 100 km long, and the width of the district ranges f
Usov,  1914;  V.G. Bubennikov and others, written commun., 1962; Bolotova,  1966; Tegshil,  1968;  N.S. Vidyakin and others, written commun., 1969;  A.M. Yurlov and others,  written commun., 1970;ÿV.P. Larev and others,  1971;  Mormily and others,  1971;
49 19 00N
106 45 00E
Sharyn-gol-Bukhlei
Average  grade of  0.9 g/m3   to 2.5 g/m3 Au.
Production  of  0.3  tonnes Au  in  1994. Reserves  of  10  tonnes Au.
778 to  894
Occurs in NE part of the North Khentii gold belt in the Bukhlei-gol and Sharyn-gol River basins. District strikes NE and occurs along the major Bayangol-gol fault zone. District is approximately 50 km long, and from 15 km to 20 km wide. District is divid
Usov,  1914;  Bolotova,  1966;  Tegshil,  1968;  Jambaa and others.,  1975;  Mormily and others,  1971;  Renchin and others,  1973;  L. Basarsad and others.,  written commun., 1979;  B. Bold-Erdene and others.,  written commun.,1985;  Gmitron and others.
48 32 05N
Boroo-Zuunmod
Average  grade  of 1.0 g/m3 Au.
Production of 0.5  tonnes  in  1993 to 1995. Reserves  of  10 tonnes  Au,
850  to  900
Occurs in the middle part of the North Khentii Au belt in upper western part of the Kharaa-gol River basin. Occurs at the intersection of NE-trending major Yoroo-gol fault zone and NW-trending Nariin-khondii fault system. District is 65 km long (NE direc
V.N. Loginov,  written commun., 1958; Blagonravov and Shavolovskyi, 1977;  Jamsrandorj and others, 1996;  Semeikhan, 1989.
104 32 05E
Zaamar
Average  grade of 0.5 g/m3  to  2.0 g/m3 Au.
Production:   of   1.4  tonnes  Au  in  1990-1994.           
Proven  reserves:   of   82  tonnes  Au  and  prognostic  resource  18  tonnes  Au.
900
Occurs in SW part of the North Khentii Au belt along NE-trending the major Bayan-gol fault zone. Both lode and placer Au deposits and prospects occur. District extends NE-SW, is approximately 100 km long and 15 km wide. District was explored in 1982-1990
Alkin and others,  1989;  Jamsrandorj,  1987;  Jamsrandorj and Diatchkov,  1996;  Semeikhan,  written commun., 1989.
49 01 00N
110 15 00E
Baljiin-gol
Average grade of 312 mg/m3 to 1,140 mg/m3 Au.
.
Reserves of  50  tonnes  Au.
Occurs in NE part of the South Khenii metallogenic belt near Russia along Balj-Gol River and northern tributaries. Main placer Au occurrences are at Khomol-gol, Khavirgan, Baruunkhuurain-gol, Chahal-gol, and Galgatai-gol. Placer Au occurrences range from
Blagonravov and Shavolovskyi,  1977; J. Byamba, written commun., 1990.
48 31 00N
108 29 00E
Terelj
Range of  312 mg/m3  to  1140mg/m3 Au.
Prognostic  reserves of   50.0  tonnes Au.
Occurs in the middle part of the South Khentii metallogenic belt in the upper parts of the Tuul and Kherlen Rivers. Main placer deposit is at Altansuudal in Altansuudal River valley that is one of NE tributaries of the Kherlen River. It averages 3.0 km l
Blagonravov and Shavolovskyi, 1977; B.V. Shekin and others, written commun., 1985.
49 31 00N
113 15 00E
Turgen
Average grade from  100 mg/m3  to 1000mg/m3 Au.
Production:  0.0  tonne    
Proven  reserves:  of   0.5 tonne  Au
Occurs in NE part of the Khoit Kherlen metallogenic belt in northern tributaries of the latitudinal part of the Ulz River. Major placer Au deposits are at Tsagaanchuluut-khudag, Tsagaanchuluut-khooloi, Gun-Ondoriin-khooloi, Arshaant, and Ovoljoon. Proven
B. V. Shekin and others,  written commun., 1985.
48 20 00N
112 28 00E
Narsynkhondlon
Average grade of  200 mg/m3  to 1,000 mg/m3 Au.
Production:  of  0.2 tonnes  Au. Proven  reserves   of  1.0 tonnea  Au. Prognostic  
reserves of approximately  5.0  tonnes Au.
850
Occurs in the middle part of the Khoit Kherlen metallogenic belt. Bedrock consists of Devonian, Carboniferous, and Permian volcanic and sedimentary rock with Devonian, Permian and Mesozoic intrusive rock. Main placer Au deposits are at Salkhit and Tokhoi
S. Ch. Norobsambuu and others,  written commun., 1987;  O. Nasantogtokh and others,  written commun., 1994;  Ts. Gombosuren and others, written commun., 1995.
49 13 00N
109 06 00E
Deed Kumiir
Averade grade of 887g/m3 SnO2 . Average grade of 1,130 g/m3 WO4
Reserves of 1,277 tonnes SnO2. Reserves of 1,022 tonnes WO4.
More than three placer deposits occur near the Deed Kumiir tin-tungsten lode deposit, in an area of moderate relief. Placer deposits are alluvial, valley-fill, deeply-buried, and complex types. Tin and wolframite occur in commercial concentrations. Heavy
K.D. Pomazkov, written commun., 1944; N.M. Khrenov, written commun., 1946;  Ts. Tseden.,  written commun., 1980; Khasin and Suprunov, 1977.
49 06 30N
109 29 30E
Zuuntarts
Consists of two placer deposits in the upper Onon district that occur at the boundary between late Paleozoic and Jurassic granitoids. Placer deposits occur in first-to third-order streams as buried alluvial thalwegs. Pay zones in placer deposits extend f
N.I. Khomizurin and others., written commun., 1952; Khasin and Suprunov, 1977; Ts. Tseden., written commun., 1989.
49 10 00N
Malokhingansky (Malokhingan) district
Production of 4.0 tonnes Au.  Proven reserves of 1.0 tonne Au. Inferred reserves of 18.0 tonnes Au.
District divided into the Nizhnebureisky and Arkharinsky subdistricts. The largest lode deposit in the area is at Prognoznoe in the Nizhnebureisky subdistrict. This deposit was discovered in 1972 during geologic mapping. Small placers (Simichi River and
V.D. Melnikov and others, written commun., 1985.
50 50 00N
127 25 00E
Blagoveshchensk-Svobodnensky district
Production of 1.0 tonnes Au.  Proven reserves of 0.0 tonnes Au. Inferred reserves of 10.0 tonnes Au.
Occurs in an area adjacent to the Amur River from the city of Blagoveshchensk to the village of Chenyaevo, and along the Zeiya River from the mouth to the Selemdzha River. Area is overlain mostly by unconsolidated deposits of the Amur-Zeiya valley. Bedro
Dzu Sung, 1991; V.D. Melnikov and others, written commun., 1989.
51 55 00N
131 55 00E
Turansky district
Production of 0.3 tonnes Au.  Proven reserves of 6.0 tonnes Au. Inferred reserves 29.0 tonnes Au.
937
Occurs in the Turansky subterrane of the Bureya terrane. District is divided into the Byssinsky, Ulmiisky, and Aleunsky subdistricts. Only the Byssinsky subdistrict is economic. The only lode source is the unexplored Buyanovsky occurrence. Bedrock consis
V.D. Melnikov and others, written commun., 1989.
50 05 00N
126 40 00E
Garnet
Huma
Average grade of 0.1 to 9 g/m3 Au.
Production of 125 tonnes Au from 1970-1995.
845
District covers 40,000 km2 along the Heilongjiang River and tributaries, including Huma, Fabiela, Lunjiang, Menluhe, and Keluo Rivers. Permafrost occurs in the area. Placer deposits in modern and small valleies have greater economic significance. Gold ma
Lu Yingjie and others, 1988; Chen Jiming and others, 1997
50 48 34N
139 36 41E
Oemku
800-850
Occurs in stream deposits of the Oemku River and other northern tributaries of the Muli River that flow into the Tumnin River. Gold-bearing beds contain fine- and medium-grained gold. Gold is derived from the Oemku lode deposit that contains gold-rich qu
A.M. Peshkov, written commun., 1972.
50 10 07N
142 57 07E
Langeriiskoe
879-932
Occurs in several river valley placers that range from 1000 to 7200 m long and 20 to 30 m wide. A zone of alluvium, from 1.8 to 2.0 m thick adjacent to bedrock, is most enriched in gold. Gold grains range from less than 0.5 mm (30%), 0.5 to 1.0 mm (33%),
N
55 40 00N
125 00 00E
Verkhneselemdzha
Production of 5 tonnes Au.  Proven reserves of 6 tonnes Au. Inferred reserves of 55 tonnes Au.
District is the best known placer district in the Amur region and includes the Kharga, Malomyrsky, Verkhnestoibinsky, and Tokur-sagursky subdistricts. Total inferred reserves for the district are 226 tonnes gold, 13.7% of the total reserves of the Amur r
V.D. Melnikov, written commun., 1990.
54 53 00N
124 15 00E
Srednenuykzhinsk
Production of 23 tonnes Au.  Proven reserves of 25 tonnes Au. Inferred reserves of 76 tonnes Au.
Srednenyukzhinsky district contains three gold-bearing subdistricts - Elgakan, Urkimin, and Dzheltulak. Elgakan subdistrict occurs on the western side of the Nyuksha River. Several small hydrothermal lode gold occurrences occur in this area; including Ba
V.D. Melnikov and V.V. Ratkin, written commun., 1994.
53 55 00N
122 30 00E
Verkhne-Indigirsky
Average grade of 133 mg/m3 Au. Range of 58 to 237 mg/m3 Au.
Production of 169 tonnes Au.  Proven reserves of 3.5 tonnes Au. Inferred reserves of 50 tonnes Au.
District contains more than 250 different and non-contemporaneous placer deposits. Most deposits are flood-plain and bench placers that occur in Holocene and interglacial deposits. Three stages of placer formation occurred in the Oligocene-Miocene, Plioc
E.I. Belousov and V.D. Melnikov, written commun., 1979; B.Y. Grezin and V.S. Borodin, written commun., 1982.
53 30 00N
125 30 00E
Gonzhinsky (Gonzha)
Production of 48 tonnes Au.  Proven reserves of 8 tonnes Au. Inferred resources 66 tonnes Au.
Occurs in the western part of the Burea superterrane. Area is underlain mainly by Precambrian metamorphic rock. The largest gold-bearing deposits of the district (Pokrovskoe, Pioneer, Borgulikan, Burinda, and Kulikan) are interpreted as being derived fro
52 37 00N
121 40 00E
Mohe
Grade rangefrom 0.1-9 g/m3 Au.
856-897
Mining began in 1860 and in the past 130 years, totally 300 tonnes Au has been produced (including district N51-02). The area covers 25,000 sq.km. and exhibits a glacial geomorphogical landscape. District occurs along second to fourth order branches of t
Lu Yingjie and others,1988; Chen Jiming and others, 1997.
54 55 00N
131 05 00E
Verkhnezeisk
Production of 24 tonnes Au.  Proven reserves of 6 tonnes Au. Inferred reserves 76 tonnes Au.
Occurs in the eastern part of the Nora-Sukhotin terrane. The Mesozoic Mulmugin, Toksky, and Okonon plutons underlie over half of the district, and the rest of the district is underlain by nearly equal amounts of Early Archean metamorphic rock and Precamb
Neronsky and  Dobraya, 1976, V.D. Melnikov, written commun., 1979.
02a
54 40 00N
Dambuki-Part A
Production of 185 tonnes Au.  Proven reserves of 56 tonnes Au. Inferred reserves of 88 tonnes Au.
District is well defined. Internal division is difficult because gold occurs throughout. Seven tentative subdistricts are distinguished: Mogoktak-Talginsky, Ilikan-Unakhinsky, Kokhaniisky, Zolotogorsko-Uspensky, Dzhalta-Uldegitsky, Ugan-Mogotsky, and Zhu
Anert, 1928; V.D. Melnikov and others, written commun., 1989.
02b
Dambuki-Part B
Petrovsky placer deposit occurs in a saddle on the Tukuringra Ridge. The placer was discovered in 1897 and has been mined since 1898. It does not coincide with a modern river system. Major accumulations of unconsolidated Cenozoic sediments occur in a sma
53 50 00N
130 00 00E
Dzhagdy
Production of 20 tonnes Au.  Proven reserve of 2 tonnes Au. Inferred reserve 51 tonnes Au.
Occurs in the Tukurigra-Dzhagdi terrane and is subdiviided into the elongate, EW-trending Un'ya-Bomsky subdistrict that contains most of the placer gold deposits, and a group of subdistricts to the south (Verkhnedepsky, Tuksinsky, and Egorsky). Placer an
V.D. Melnikov and others,  written commun., 1985.
04a
52 50 00N
128 50 00E
Zeiya-Selemdzha-Part A
Production of 111 tonnes Au.  Proven reserves of 29 tonnes Au. Inferred resources 101 tonnes Au.
District is underlain by Early Cretaceous volcanic rock that mostly overlie the Nora-Sukhotin terrane. District is divided into the Umlekan, Yasnensky, Oktyabrsky, Sokhatiny, Chagoyan, and Nizhneselemdzha subdistricts. The Zeiya-Selemdzha placer gold dis
V. Lozhnikov and others, written commun., 1984; V.D. Melnikov and others, written commun., 1985.
04b
Zeiya-Selemdzha-Part B
The largest placer of the Yasnensky subdistrict is the Yasny Creek placer, discovered in 1934. It was mined from 1935 to 1937. More recently, the deposit was mined using a dredge and exhausted. The bedrock consists of crushed extrusive rock, with less co
04c
Zeiya-Selemdzha-Part C
Sokhatiny gold-bearing subdistrict occurs in the valley of the Sokhatiny River and headwaters of the Mamyn River (Orlovka, Levy and Pravy Mamyn Creeks). The placers of the Sokhatiny River were discovered in 1942, and have been mined from 1948 through the
53 00 00N
132 45 00E
Verkhne-Yansky
Production of 137 tonnes Au.  Proven reserves of 29.0 tonnes Au. Inferred reserves of 60.0 tonnes Au.
District contains about 60 cassiterite placer occurrences that form groups of three to ten placer deposits; each group is closely related to their bedrock sources. Main types are eluvial-slope and ravine placer deposits that range up to some km long and
V.D. Melnikov and others, written commun., 1985 ; V.D. Melnikov and  V.D. Polevanov, written commun., 1990.
52 13 50N
133 52 59E
Sofiiskoe
Deposits are mined out.
750-800
Occurs in stream deposits in the upper reaches of the Niman River (a tributary of the Burea River). Total length of placers is approximately 30 km. Fine- and medium-grained gold occurs irregularly. Gold fineness is 750-800. Gold is derived from greenschi
N.V. Ognyanov in Nokleberg and others, 1997.
52 24 00N
135 44 28E
Kerbi
Occurs in Kerbi River valley numerous tributaries. Total length of gold-bearing beds is approximately 35 km. Gold is fine- and medium-grained with fineness of 800-850. Bedrock is Jurassic black shale that is metamorphosed to greenschist facies with thin
53 51 32N
139 49 27E
Ulskoe
850-900
District contains stream and bench placers of the Ul Orelsky River and tributaries. Total length of placers along the Ul Orelsky River and tributaries is approximately 15 km. Gold is associated with vein quartz and fineness is  850-900. Local bedrock con
53 34 49N
140 21 18E
Kolchanskoe
500-600
District contains low-grade stream placers along the Kolchan River and tributaries with a total length of approximately 10 km. Gold is fine-grained, and fineness is 500 to 600. A few nuggets occur, ranging up to 10-20 g. Gold is associated with quartz an
53 02 26N
138 46 04E
Kherpuchinskoe
700-850
District contains stream deposits along the Kherpuchi River and tributaries of the Somni spring (a tributary of the Amgun River). Placer deposits occur both in main and branch valleys along a distance of over 25 km. Gold is fine- or medium-sized, and hig
52 36 45N
139 28 35E
Oktyabrskoe
District contains alluvial-colluvial placers that the valley and slopes of the Pochel River (a tributary of the Amgun' River). Gold is concentrated largely in a weathering crust developed in a gold-bearing, mid-Cretaceous tonalite that contains quartz st
54 05 51N
142 55 26E
Schmidtovskoe
800-900
District contains small placers, 30 to 10 m wide and up to 1000 m long. Gold occurs throughout a 3 to 4 m thick section of modern alluvium, although a 1.2 to 1.4 m thick zone near bedrock is the richest. Alluvium consists of ultramafic and mafic rock tha
V.D. Sidorenko, 1977.
O
56 28 00N
122 01 00E
Nizhnenyukzinsky district
Inferred reserves of 35 tonnes Au.
District is the largest in the Russian Far East and occurs north of the Mesozoic Chilchinsky granitic pluton that intrudes Early and Late Archean metamorphic rock. Pluton consists of anorthosite (Kalar pluton), syenite (Tassky pluton), and granite (Sedol
V.D. Melnikov, written commun., 1979.
58 37 01N
137 11 02E
Kurun-Uryakh
Average grade of 3.2-4.5 g/m3 Au.
Production of about 12 tonnes Au.
Consists of a buried placer that is 5 km long and 0.2-0.4 km wide. Depth of overburden ranges from 5-30 m. Gold-bearing bed is 0.2 m thick, and grade is 3.2-4.5 g/m3. Interpreted as derived from the Malyutka gold-quartz deposit. District includes several
P.P. Smirnov,  written commun., 1961; N.L. Kobtseva, written commun., 1988.
57 36 14N
134 38 15E
Kondyor
Major
Production of 3 tonnes PGE in 1993.  Second largest placer PGE producer in Russia
Mining since about 1988
Consists of an alluvial placer that occurs in the north-flowing Kondeur River valley. Richest placer occurs in a 10 km-long paystreak that averages 100 m wide. Placer platinum occurs in 6-8 m thick fluvial gravels on or just above bedrock. Typical platin
V. Molchanov and V. Sapin, written commun., 1993.
56 27 00N
132 54 00E
Sash-Yular
Average grade of 8.2 kg/m3 monazite, 15.6 kg/m3 ilmenite, 5 kg/m3 rutile.
Reserves of 82,000 tonnes monazite with 820 tonnes Th, 19,200 tonhnes REE, and 88,000 tonnes Zr. Reserves of 849,000 tonnes ilmenite.
No summary provided.
59 44 21N
143 26 34E
Okhotsk
Average grade of 3 to 47 g/m Au.
Production of about 15 tonnes Au through 1930.  Most deposits mined out.
720-850
District discovered in 1829 and covers an area of about 140 sq. km. About ten placer deposits occur in the district. Nearly all are exhausted, and a few are mined at the present. Placer deposits occur in valleys; some are buried. Gold-bearing beds range
P.P. Smirnov, written commun., 1962; N.L. Kobtseva, written commun., 1988.
P
61 00 30N
138 08 55E
Allakh-Yun
Average grade of 1 to 10 g/m3 Au.
Production of about 23 tonnes Au between 1940 to 1964.
813-844
District contains about 150 placer deposits, mostly in the Allak-Yun and Yudoma River basins. Small channel-fill placers occur in the northern part of area. Medium-size and some large valley placers and sparse bench placers occur in the middle part of di
P.P. Smirnov, written commun., 1961; V.I. Korostelev,  written commun., 1963; Trushkov, 1971; N.L. Kobtseva, written commun., 1988.
Q
65 53 47N
129 45 11E
Verkhoyan
Average grade of up to 15 g/m3 Au.
703-766
District contains several small valley and ravine placers. Deposits range up to 4 km long and 50 m wide. Bench placers also occur. Placer deposits are buried by 1-3 m of alluvium. Gold-bearing beds are less than 2 m thick. Gold occurs irregularly in radi
Trushkov, 1971; Ivensen and others, 1975; Yu.A. Vladimirtseva, written commun., 1985.
67 23 09N
134 11 17E
Sn
Verkhnegilyui
Ranges up to 1,169 g/m3 cassiterite.
District is divided into the Apsakan, Laprin, Malogilyui, and Bryantin subdistricts. Occurs in the axial part of the Stanovoi anticline. Gold-bearing areas within the district occur close to the Mesozoic Tynda, Dyupkoisky, Unakhinsky, and Mulmugin pluton
P.O. Genkin and E.A. Sinuygina, written commun., 1973; M.E. Gorodinsky, written commun., 1991.
66 42 02N
137 28 59E
Adychan
Average grade of 0.2 to 34.4 g/m3 Au.
475 to 960
District contains more than 60 placer deposits that are mostly small and non-commercial. Deposits include buried placers in neotectonic depressions (as at Nadezhnoe), and high terrace and valley placers. Deposits in depressions are Miocene to Pliocene. M
Rozhkov and others, 1964; Trushkov, 1971; Yu.A. Vladimirtseva, written commun., 1985.
64 33 24N
142 49 34E
Verkhneamursk
Average grade of 2.6-650 g/m3 Au.
730-969
District consists of the Solov'ev and Urusha-Oldoi subdistricts. The largest placer in the Urusha-Oldoi subdistrict is the Khaiktinsky placer, and the largest placer in the Solov'ev subdistrict is the Dzhalinda placer.  

Dzheltulak subdistrict includes
B.V. Pepelyaev, written commun., 1964; Trushkov, 1971; Yu.A. Vladimirtseva, written commun. 1987; Oleinikov, 1992.
R
70 20 02N
134 16 35E
Kular
Average grade of 0.5-26 g/m3 Au.
391-962
District contains several placer deposit types, including buried Paleogene-Neogene placers that occur at the base of superimposed depressions, and small late Quaternary ravine placers. District contains about 10 known placer deposits of variable length a
Ivensen and others, 1975; Samusikov and Sergeenko, 1974; Yu.M., written commun., 1963; Amuzinsky and others, 1988.
69 41 50N
140 21 57E
Polousnensky
Grade ranges up to hundreds g/m3 cassiterite .
District contains several tens of cassiterite-bearing zones.  

The Deputatskaya and Omchikandinskaya placer deposits are the most important. Placers in this district occur near granite intrusions and are closely related to bedrock sources. Placers occur
O.G. Epov and G.S. Sonin, written commun., 1964; Trushkov, 1964, 1971.
68 16 42N
141 38 40E
Khatynnak-Sala
Grade ranges up to 10-15 g/m3 Au.
District contains several gold placer deposits at several horizons. The placers are short. Gold is fine and platy. Placer gold occurs in gravel overlying Paleozoic limestone. One example is at Khatynnak-Sala Creek that occurs in a broad creek valley with
O.G. Epov and G.S. Sonin, written commun., 1964; Trushkov, 1971.