K Feldspar from selected localities.
Finland | |
| Lahti, S. (1981): On the granitic pegmatites of the Eräjärvi area in Orivesi, southern Finland. Bulletin of the Geological Society of Finland. 314 |
Lahti, S. (1981): On the granitic pegmatites of the Eräjärvi area in Orivesi, southern Finland. Bulletin of the Geological Society of Finland. 314 |