Kengxi fluorite deposit, Suichang County, Lishui, Zhejiang, Chinai
| Regional Level Types | |
|---|---|
| Kengxi fluorite deposit | Deposit |
| Suichang County | County |
| Lishui | Prefecture |
| Zhejiang | Province |
| China | Country |
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Latitude & Longitude (WGS84):
28° 22' 59'' North , 118° 46' 50'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Pucheng | 59,832 (2012) | 56.6km |
The ore-controlling structures in the mining area are dominated by NE- and NW- striking faults. Among these faults, the NE-striking Hengkengping Fault (F1), which serves as the basin-controlling fault along the northwestern margin of the Huangshayao–Hushan half-graben Basin, traverses the entire area and constitutes the dominant ore-controlling and hosting structure. On the basis of the fault system, the Kengxi fluorite mining area can be divided into three ore blocks. The Kengxi ore block, located southwest of the F1 fault, hosts fluorite orebody I and its hanging-wall branch vein I-1. Both are characterized by a NE-SW-trending, exceptionally thick large-vein morphology (averaging 8.5 m, with a maximum thickness of 19.23 m), a high dip angle (∼55°), and a high grade (average CaF2 content of 40.9%). Mineralization developed within silicified breccia and quartz replacement zones, intensifying near the roof where local branching and merging of veins are observed. Northeast of the F1 fault, the Fanshan ore block contains the Aotou orebody III and Fanshan orebody IV. The former consists of double lenses with an attitude of 300°∼310°∠53°∼60° (Fig. 3); the latter exhibits a NE-plunging lenticular shape characterized by quartz-chalcedony veinlets and surface skeletal structures formed by the leaching of fluorite.
The Kengxi deposit experienced four stages. To establish a systematic paragenetic sequence, specific alphanumeric codes are employed to label each stage. For example, F-I denotes the first mineralization stage. Stage I is dominated by purple, subhedral to euhedral coarse-grained fluorite, commonly forming the core of breccias or growing in country rock fractures. Stage II comprises green, anhedral fine- to medium-grained fluorite, which is intensely brecciated and often cemented by Stage III fluorite or quartz, thus marking a significant tectonic–hydrothermal event. Stage III comprises colorless, transparent, medium- to coarse-grained anhedral fluorite, typically occurring as veins cross-cutting or cementing earlier breccias. Stage IV is the most diagnostic stage. In the hand specimens, this stage commonly appears milky white, pale yellow, or colorless, occurring as colloidal crusts or stalactitic aggregates, exhibiting typical colloform textures. Furthermore, well-developed transparent cubic fluorite crystals and prismatic quartz are frequently observed in vugs associated with this stage.
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
2 valid minerals.
Rock Types Recorded
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Alphabetical List Tree DiagramDetailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 3 - Halides | |||
|---|---|---|---|
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Quartz | SiO2 |
| F | Fluorine | |
| F | ⓘ Fluorite | CaF2 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Quartz | SiO2 |
| Ca | Calcium | |
| Ca | ⓘ Fluorite | CaF2 |
Other Regions, Features and Areas containing this locality
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References
[1]Chen, Haoran; Cao, Huawen; Lin, Dianmeng; Wang, Fangyue; Liang, Shuhao; Yao, Feiyang; Zhang, Jianfang; Wang, Zhen; Liu, Yuandong; Zhang, Gangyang; et al. (2026) Multistage F-rich hydrothermal fluids led to a large-scale high-grade fluorite deposit during the Miocene (16Ma) in South China. Ore Geology Reviews, 190. 107173 doi:10.1016/j.oregeorev.2026.107173
