Chalcedony from Borneo
Indonesia | |
| Davies, A. G. S. et al. (2008): Economic Geology 103, 717-757. |
| [var. Agate] Observed and acchived at the mine by P. Andresen, 1992. |
Malaysia | |
| [var. Agate] James, Elvaene, W. Soehady Erfen, Hennie Fitria, A. Ghani, Azman, Chuwat, Angela Vidda, Ejiga, Gerald Eko, Garba, Terfa Elijah (2020) Discovery of agate geode and nodules at Mount Conner, Semporna, Sabah. Warta Geologi, 46 (3) 191-195 doi:10.7186/wg463202003 |