Table 1 Summary of the critical elements (in parts per million or ppm) in major geothermal fields in the world28,29,30,31,32,33,34,35,36,37.
From: Assessment of critical mineral extraction from brines at Mount Meager, Southwestern BC, Canada
Salton Sea (USA) | Coso (USA) | Dixie (USA) | Wairakei (NZ) | Kawerau (NZ) | Simav (Turkey) | Soultz- Forêts (France) | |
|---|---|---|---|---|---|---|---|
Temperature (°C) | 296 | 274 | 246 | 260 | 310 | 190 | 150 |
Boron (ppm) | 257 | 119 | 9.9 | 27 | 57 | 3.56 | * |
Lithium (ppm) | 194–230 | 45 | 2–4 | 12.7 | 6.3 | 1.76 | 150 |
Silica (ppm) | 461 | 711 | 599 | 618 | 954 | 281 | 189 |
Zinc (ppm) | 438 | 0.03 | * | 0.002 | 0.35 | 5.5 | 3 |
K (ppm) | 12,000 | 928 | 64 | 194 | 119 | 62.7 | 3200 |
Mg (ppm) | 19 | < 0.35 | 0.007 | 0.04 | 0.01 | 0.42 | 124 |
Cesium (ppm) | 20 | * | * | 2.5 | 0.6 | 0.02 | 14 |
Rubidium (ppm) | 170 | * | * | 2.9 | 0.7 | 0.01 | 22 |
