iron ore | 27 |
copper ore | 11 |
gold ore | 11 |
sulfide ore | 8 |
uranium ore | 7 |
manganese ore | 2 |
bauxite ore | 1 |
both igneous and sedime… | 0.40 |
southern africa | 0.35 |
zimbabwe | 0.34 |
thailand | 0.25 |
consist of quartz | 0.55 |
recover by mining | 0.52 |
vary in color | 0.48 |
produce tantalum | 0.45 |
separate noble metals | 0.43 |
liberate valuable miner… | 0.41 |
extract the elements of… | 0.40 |
contain enough of a met… | 0.40 |
occur in vein | 0.39 |
produce tungsten | 0.38 |
More » |
copper | 0.68 |
lead | 0.55 |
sulphur | 0.54 |
pyrite | 0.53 |
only minute traces of g… | 0.51 |
less than 10% lead | 0.50 |
manganese | 0.47 |
lead sulfide mineral ga… | 0.47 |
antimony | 0.46 |
low percentages of copp… | 0.44 |
More » |
some form of beneficiat… | 0.52 |
certain processing | 0.46 |
different methods of se… | 0.29 |
rich | 0.65 |
hard | 0.60 |
concentrated | 0.60 |
hematite | 0.56 |
rare | 0.54 |
beneficiated | 0.50 |
refractory | 0.50 |
low grade | 0.49 |
small | 0.48 |
fine | 0.47 |
More » |
the mineral chromite | 0.43 |
metalliferous mineral | 0.25 |
few rhodium-bearing min… | 0.25 |