Oligoclase from North Korea
North Korea | |
| Takeo Kato: "Two Types of Nickeliferous Pyrrhotite Deposits Found in Korea." (9 pp) |
| Paek, R.J., Gap, K.H., Jon, G.P. - Eds. (1993) Geology of Korea. Foreign Languages Books Publishing House. |
North Korea | |
| Takeo Kato: "Two Types of Nickeliferous Pyrrhotite Deposits Found in Korea." (9 pp) |
| Paek, R.J., Gap, K.H., Jon, G.P. - Eds. (1993) Geology of Korea. Foreign Languages Books Publishing House. |