Table 4: EDR

Table 4. Changes in Economic Demonstrated Resources from 2016 to 2017

CommodityUnit EDR 2016 EDR 2017 Change (%)
Antimony kt Sb 138.9 138.2 ↓-1%
Bauxite Mt 6005 6015 ↑<1%
Black Coal
In situ Mt 85 753 87 490 ↑2%
Recoverable Mt 70 927 72 571 ↑2%
Brown Coal
In situ Mt 92 887 92 887 0%
Recoverable Mt 76 508 76 508 0%
Cobalt kt Co 1164 1221 ↑5%
Copper Mt Cu 87.78 87.47 ↓<1%
Diamond Mc 115.84 39.68 ↓-66%
Fluorine kt F 343 343 0%
Gold t Au 9830 10 070 ↑2%
Graphite Mt 0.971 7.14 ↑636
Iron
Iron ore Mt 49 588 47 987 ↓-3%
Contained iron Mt Fe 23 771 23 251 ↓-2%
Lead Mt Pb 35.09 36.42 ↑4%
Lithium kt Li 2730 2803 ↑3%
Magnesite Mt MgCO3 320 316 ↓-1%
Manganese Ore Mt 219 231 ↑5%
Mineral Sands
Ilmenite Mt 276.9 276.5 ↓<1%
Rutile Mt 33.0 32.9 ↓<1%
Zircon Mt 78.6 78.3 ↓<1%
Molybdenum kt Mo 210 160 ↓-24%
Nickel Mt Ni 18.5 19.3 ↑4%
Niobium kt Nb 286 216 ↓-24%
PGE t metal 5.3 24.9 ↑370%
Phosphate
Phosphate rock Mt 1072 1170 ↑9%
Contained P2O5 Mt P2O5 180 198 ↑10%
Potash kt K2O 56 58 ↑3%
Rare Earths2 Mt oxide 3.43 3.27 ↓-5%
Silver kt Ag 89.29 90.31 ↑1%
Tantalum kt Ta 75.7 55.4 ↓-27%
Tin kt Sn 486 415 ↓-15%
Tungsten kt W 391 386 ↓-1%
Uranium kt U 1270 1290 ↑2%
Vanadium kt V 2111 3965 ↑88%
Zinc Mt Zn 63.50 67.52 ↑6%

Abbreviations
t = tonne; kt = kilotonnes (1000 t); Mt = million tonnes (1 000 000 t); Mc = million carats (1 000 000 carats); n.a. = not available; PGE = platinum group elements (Pt, Pd, Os, Ir, Ru, Rh).
Where an element symbol follows the unit it refers to contained metal content.
EDR = Economic Demonstrated Resources.

Notes

1. Graphite EDR last assessed in 2013.

2. Rare earths comprise rare earth oxides (REO) and yttrium oxide (Y2O3).