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Penglai Gem deposit, Penglai, Ding'an Co., Hainan Province (Hainan Island), China
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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.

Mineral List

Columbite-(Fe)
Corundum
var: Ruby ?
Corundum
var: Sapphire

'Feldspar Group'
Ilmenite
Magnetite
var: Titaniferous Magnetite

'Olivine'
Pyrope
'Pyroxene Group'
Spinel
Zircon


12 entries listed. 6 valid minerals.

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References

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.

Songxue Chen (2006): Study on Gemmological Characteristics of Zircon from Penglai, Hainan Province. Journal of Gems & Gemology 8(4), 6-9.

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