Effect of Deposit Types, Mine Development and Industry …
509
Table 1 Changes in zinc and lead production by country between 1998 and 2017
Zinc ( 000 t)
Lead ( 000 t)
Country
1998
2017
Change (%)
1998
2017
Change (%)
Australia
1059
842
−20
618
459
−26
Canada
1062
344
−68
190
14
−93
USA
755
774
3
493
310
−37
Mexico
395
674
71
166
243
46
European Union
743
683
−8
259
169
−35
Peru
869
1473
70
258
307
19
India
143
833
483
39
170
333
China
1270
4400
246
580
2150
271
Other
1274
2476
94
457
758
66
Total
7570
12,500
65
3060
4580
50
Proportion
Australia, Nth
America, EU
53.0%
26.5%
−50
56.4%
26.1%
−54
Proportion China
16.8%
35.2%
110
19.0%
46.9%
148
Proportion India
1.9%
6.7%
253
1.3%
3.7%
189
Lead-Zinc Deposit Types
Major lead-zinc deposit types found in North America, Europe and Australia are
shown in Table 2.
Broken Hill Type deposits tend to be coarse grained, allowing coarser grinds and
higher metal recoveries than other Pb-Zn deposits. They are also typically high in
Table 2 Lead-zinc deposit types in North America, Europe and Australia [3]
Deposit type
Example
Country
SEDEX
McArthur River, Mt Isa, Century
Red Dog
Selwyn
Australia
USA
Canada
Broken hill type (high grade
metamorphic)
Broken Hill
Cannington
Australia
Mississippi Valley Type/Irish
Type/carbonate Replacement deposit
Missouri Lead Belt, Tennessee, Taylor
Pine Point
Tara
USA
Canada
Ireland
VMS
Manitoba operations, Izok, Kidd
Greens Creek
Rosebery
Canada
USA
Australia
Epithermal
Penasquito
Elura (Endeavour)
Mexico
Australia
Précédent

- 495/937

Suivant