Outcrops of Cenozoic volcanic rocks, consisting of pyroxene-olivine basalt, alkaline olivine basalt and pyroclastic rocks. They contain abundant mantle xenoliths of lherzolite and olivine websterite, and xenocrysts of olivine, corundum and other minerals.
Located about 2 km SE of Penglai City.
Ref.:
- Wang Furui (1988): The Sapphires of Penglai, Hainan Island, China. Gems & Gemology 24(3), 155-160.
- Wang Denghong, Chen Yuchuan, Xu Jue, Yang Jianmin, Xue Chunji, and Yan Shenghao (2000): Cenozoic Mineralization in China, as a Key to Past Mineralization and a Clue to Future Prospecting. Acta Geologica Sinica 74(3), 478-484.
- Qiu Zhili, Qin Shecai, and Chen Xiaoming (2001): Tantalic columbite inclusions in corundum megacrysts in Penglai, Hainan. Acta Mineralogica Sinica 21(2), 205-208.
- Qiu Zhili, Wu Fuyuan, Yu Qingyuan, Xie Liewen, and Yang Shufeng (2005): Hf isotopes of zircon megacrysts from the Cenozoic basalts in estern China. Chinese Science Bulletin 50(22), 2602-2611.
- Song-Xue Chen (2006): Study on Gemmological Characteristics of Zircon from Penglai, Hainan Province. Journal of Gems & Gemology 8(4), 6-9.
