| 1 | The country possesses rich mineral deposits. | |
| 2 | Finding new seams to replace depleted ones is becoming harder. | |
| 3 | But at least you know where the seam is, and that's the hard part. | |
| 4 | Introduced the geologic background of the Coal-Ge, and the distribution of Germanium in the coal seam. | |
| 5 | Trona is negatively correlated with mirabilite in the mineral bed sections of soda lakes. Trona and halite show a positive correlation. |