Tridymite from Sunda Plate
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. |
| G. Camus, A. Gourgaud, P.M. Vincent, Petrologic evolution of Krakatau (Indonesia): Implications for a future activity, Journal of Volcanology and Geothermal Research, Volume 33, Issue 4, October 1987, Pages 299-316, ISSN 0377-0273, 10.1016/0377-0273(87)90020-5. |
Philippines | |
| H. J. Axon and M. J. Nasir (1977) A Metallographic and Microprobe Examination of a Metallic Nodule from the Bondoc Peninsula Meteorite. Mineralogical Magazine 41:121-122. |