Types, characteristics and general indicators of tin deposits in China

The types, characteristics and general indicators of tin deposits in China are shown in Table 1 below:
Table 1 Types, characteristics and general indicators of tin deposits in China
Project
Tin-containing mineral
Tin mineral inlay grain size
Companion score
Metal sulphide content
Main gangue mineral
Mud-containing (-0.074mm) condition
Main beneficiation method
Tin beneficiation index, %
Area where the deposit is located
α
β
ε
Pulse tin deposit
Primary vein
silicon
_
Alkali
1. Tin-containing granite
锡石
Crude
<10%
quartz
less
Rough selection is re-election, and multiple methods are selected.
>40
65~80
2. Tin-bearing pegmatite
Sartsite, black tungsten ore
Medium and coarse
钽铌
<10%
Quartz feldspar
less
Ibid.
0.1
>40
6580
Congo, Zaire
3, cassiterite quartz vein
Quartz feldspar
Sartsite, cassiterite
Thick, medium and fine uneven
Sulfide minerals such as copper
quartz
less
Ibid.
0.1 to 0.5
>40
65~80
China, Yunnan, Guangxi, Australia, UK
Quartz topaz
Quartz type
Yunying type
Sulfide
Iron
4, skarn
锡石, 水锡石, 黝锡矿
Medium and thin uneven
Various metal sulfides
S+Fe>20%
Too medium
Heavy-floating, floating-heavy, and selective methods
0.7 to 1.0
60
30~80
China's Yunnan, Jiangxi, Sichuan, and the Soviet Union
5, cassiterite sulfide
Tinfoil sulfide
Xi Shi, Yan Xi Mine
Ibid.
S+Fe>40%~70%
Quartz silicate
Ibid.
Heavy, floating, magnetic, electrification, leaching, etc.
0.7 to 1.0
20~60
30～75
China, Yunnan, Guangxi, Sichuan, Hunan, Australia, Bolivia
6, cassiterite-carbonate
Ibid.
Ibid.
Ibid.
S+Fe>20%
Carbonate
Ibid.
Ibid.
0.7 to 1.0
Ibid.
60～70
Flat York, Thailand
7, cassiterite-carbonate-sulfide
Ibid.
Ibid.
Ibid.
S+Fe>20%
Ibid.
Ibid.
Ibid.
0.7 to 1.0
Ibid.
Ibid.
Secondary veins (weathered from primary veins)
8, cassiterite-oxide
锡石
Same as above
fine
Dependent on the mineral composition of the primary deposit
The deeper the oxidation, the less sulfide
Quartz calcite
Up to 25% to 30%
Re-election or heavy-floating
0.3~1.0
50~60
60～85
Yunnan, China
Sand tin deposit
Residual slope sand deposit (by the deep weathering of the vein tin deposit to destroy the residual in situ or slightly moved)
9. Earth-like residual slope sand deposit
Sichre
Fine grain unevenness
Limonite, manganese tuberculosis
The deeper the oxidation, the less sulfide
Calcite
quartz
50% to 80%
Rough selection, re-selection, magnetic selection, gravity, etc.
0.3 to 0.5
45~50
53～57
Yunnan, China
10, block residual slope sand deposit
Ibid.
Uneven thickness (depending on the original deposit)
Limonite (depending on the mineral composition of the primary deposit)
Ibid.
Quartz feldspar
in
Ibid.
0.1
40~55
50-65
Yunnan, Guangxi, China
11, weathering shell
Ibid.
Ibid.
Ibid.
Ibid.
in
Ibid.
0.1
Ibid.
Ibid.
12. Deposit deposits
Ibid.
Ibid.
Ibid.
Ibid.
in
Ibid.
0.1
Ibid.
Ibid.
Alluvial sand ore (reconstructed by residual water)
13, riverbed sand tin mine
Ibid.
Medium and fine
Associated with a wolframite, scheelite, magnetite, iron titanium, zircon, tantalum and niobium ore, minerals and other metal monazite
less
quartz
20% to 30%
Rough selection, re-election, selection in a variety of ways
0.1
60～70
65～85
China Guangdong, Malaysia, Indonesia, Thailand, etc.
14, river valley sand tin mine
Ibid.
Ibid.
less
quartz
less
0.1
Ibid.
Ibid.
15, Hewan sand tin mine
Ibid.
less
quartz
less
0.1
Ibid.
Ibid.
16. Lakeside sand tin mine
Ibid.
Medium and fine
no
quartz
Silicate
Less mud
Re-election
0.005
Ibid.
60～85
17. Glacier sand deposit
Ibid.
Ibid.
no
Ibid.
less
Ibid.
0.01
Ibid.
Ibid.
18. Karst sand deposit
Ibid.
Ibid.
no
Ibid.
less
Ibid.
0.01
40～70
Ibid.
19. Hongji sand tin mine
Ibid.
Ibid.
no
Ibid.
less
Ibid.
0.01
Ibid.
Ibid.
Guangdong, China
20, seashore sand mine
Ibid.
Ibid.
no
Ibid.
Without mud
Rough selection, re-election, selection in a variety of ways
0.005
60～70
60～90
China Guangdong, Thailand, Indonesia

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