|
Indonesia | |
|
| Sun, T. T., Mok, P. C., Paul, S. L., Paramita, M., Arps, C. E., Atichat, W., ... & Wijaya, K. (2008). Precious Opal from Java (Gemmological properties, micro-and nano-structures) Date: 10-05-2008. |
|
| Lowenstern, J. B., van Hinsberg, V., Berlo, K., Liesegang, M., Iacovino, K., Bindeman, I. N., & Wright, H. M. (2018). Opal-A in glassy pumice, acid alteration, and the 1817 phreatomagmatic eruption at Kawah Ijen (Java), Indonesia. Frontiers in Earth Science, 6, 11. |
