Precious zircon and corundum megacrysts, occurring in palaeochannels and palaeoterraces around Cenozoic volcanic rocks outcropping within an area of 20 km2. The rock types include limburgite, olivine basalt, pyroxene-olivine basalt, andesitic basalt, and minor tholeiite. They contain abundant mantle xenoliths of garnet lherzolite, spinel lherzolite and garnet pyroxenite.
Zircons from this locality, usually greyish brown in colour, can be heat-treated to give colourless or light blue specimens (Tang, 2001).
References
- Deping Tang (2001): Heat Treatment of Zircons from Mingxi, Fujian. Acta Mineralogica Sinica 21(3), 521-524.
- Qiu Zhili et al. (2004): Baddeleyite and Zircon mineral inclusions: Evidence for the genesis of zircon megacrysts related to Cenozoic volcanic rocks in Mingxi, Fujian. Acta Scientiarium Naturalium Universitatis Sunyatsenti 43, 135-139.
- Qiu Zhili, Wu Fuyuan, Yu Qingyuan, Xie Liewen, and Yang Shufeng (2005): Hf isotopes of zircon megacrysts from the Cenozoic basalts in eastern China. Chinese Science Bulletin 50(22), 2602-2611.
Mineral List
7 entries listed. 4 valid minerals.
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