Distribution of elements on the surface of the earth
| 
Element | 
Distribution | 
Element | 
Distribution | |
| 
Oxygen | 
49.85% | 
Silicon | 
26.03% | |
| 
Aluminium | 
7.28% | 
Calcium | 
3.18% | |
| 
Sodium | 
2.33% | 
Potassium | 
2.23% | |
| 
Magnesium | 
2.11% | 
Hydrogen | 
0.97% | |
| 
Titanium | 
0.41% | 
Chlorine | 
0.20% | |
| 
Carbon | 
0.19% | 
Others | 
1.00% | 
Metals and their ores
| 
Substance | 
Ore | 
Substance | 
Ore | |
| 
Calcium | 
Limestone, marble, chalk | 
Mercury | 
Cinnabar | |
| 
Copper | 
Copper pyrites, Cuprite | 
Potassium | 
Carnelite, Saltpetre | |
| 
Cement | 
Limestone and clay | 
Sodium | 
Rock salt, Cryolite | |
| 
Glass | 
Silica and lime stone | 
Thorium | 
Monozite | |
| 
Iodine | 
Sea weeds | 
Titanium | 
Rutile, limenite | |
| 
Iron | 
Hematite, Magnatite, Iron pyrites | 
Uranium | 
Pitchblende | |
| 
Gold | 
Aurite | 
Silver | 
Argentite | 
Metals and their alloys
| 
Alloy | 
Component | |
| 
Brass | 
Copper, Zinc | |
| 
Bronze | 
Copper, Tin, Zinc | |
| 
Gun metal | 
Copper, Tin, Zinc | |
| 
Duralmin | 
Aluminium, Copper, 
Magnesium, Manganese | |
| 
Solder | 
Aluminium, Lead, Tin | |
| 
Pewter | 
Lead, Tin | 
 
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