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Maoantan pegmatite field, Quanzhou Co., Guilin Prefecture, Guangxi Zhuang Autonomous Region, China

Latitude: 26°12'N
Longitude: 110°50'E
Granite pegmatite dykes with polymetallic rare-metal mineralizations (Ta-Nb-Zr-Hf-Be-Sn-W and minor U), hosted in volcaniclastic rocks of the Proterozoic Danzhou group along NE-trending second-order fractures within a narrow stretch of land between two NNE-trending shear zones along the eastern margin of a composite batholith, which is composed mainly of Caledonian medium-grained porphyritic biotite granite. The pegmatites are poorly differentiated and do not exhibit zoning phenomenons, but there is zoning observed within the field in that the tantalum, niobium and tin grades increase from the north to the south.

The pegmatite field forms part of a U-W-Mo-Sn mineralization belt that extends for more than 100 km between Luzhai County of Liuzhou Prefecture and Quanzhou County of Guilin Prefecture. Within this belt, more than 50 deposits were discovered that cover a wide range of genetic types, including magmatic, pegmatite and skarn mineralizations, tin-bearing placers, and hydrothermal deposits formed at high to low temperatures.

NOTE: Li and Zhang (1995) refer to this locality as an undisclosed pegmatite deposit "in some area of Guangxi", but they provide geological details that are very obviously the same as those provided by other authors for the Quanzhou ore field and the tin-tungsten deposits in Guanyang County, which all form part of the same metallogenic zone. The name of the pegmatite field and the grid reference are taken from the report by Kamitani et al. (2007).

Mineral List

var: Cleavelandite
Microlite Group
var: Hafnian Zircon

32 entries listed. 23 valid minerals.

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- Renke Li and Xuming Zhang (1995): Characteristics of Ta-Nb-Be granite pegmatite deposit in some area of Guangxi. Geology and Prospecting 31(6), 15-22.
- Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., and Watanabe, Y. (2007): Mineral Resources Map of East Asia. Geological Survey of Japan.

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