Sichuan, China

Main commodities: Ti V Fe
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The Hongge magnetite, vanadium, titanium deposit is located in Sichuan Province, south-western China.

The deposit occurs within the Panzhihua-Xichang (Pan-Xi) intra-continental rift on the Yangtze Platform, and is hosted by a sill like layered basic-ultrabasic (gabbroic) complex that covers an area of 60 sq. km.

The Hongge layered intrusion is a member of the extensive 260 Ma Lower Emeishan Igneous Province and flood basalts of SW China.

The intrusion, from the base upwards, is made up of (Hong Zhong, et al., 2004):
i). Lower zone - olivine clinopyroxenite,
ii). Middle zone, clinopyroxenite,
iii). Upper zone gabbro.

Each of these zones consists one or two compositional cycles, with distinct Mg number values, TiO2 contents and total REE levels. Thick magnetite layes ranging in thickness from 14 to 84 m are found in both the middle clinopyroxenite zone and upper gabbro zone.

Sampling of the Lower and Middle zone indicate they are enriched in platinum and palladium relative to iridium and ruthenium and that the Pd/Ir ratios increase progressively upwards in each cyclic unit. Chromite is the major phase controlling concentrations of iridium and ruthenium. Comparisons of these and other metal ratios suggest that each cyclic unit in the Hongge layered intrusion might have resulted from crystal fractionation and mixing between a primary and evolved magma.

The mineralisation occurs in 6 layers that are individually between 8 and 28 m thick.

No production has apparently been recorded (2006), although the deposit is at the mine stage.

Reserves are quoted by Rundqvist, et al., Vernadsky SGM, Moscow as:

     1835 Mt @ 27.04% Fe, 196 Mt @ 10.57% TiO
2, 14.5 Mt @ 0.24% V205.

The most recent source geological information used to prepare this summary was dated: 2006.    
This description is a summary from published sources, the chief of which are listed below.
© Copyright Porter GeoConsultancy Pty Ltd.   Unauthorised copying, reproduction, storage or dissemination prohibited.

  References & Additional Information
   Selected References:
Bai Z-J, Zhong H, Naldrett A J, Zhu W-G and Xu G-W,  2012 - Whole-Rock and Mineral Composition Constraints on the Genesis of the Giant Hongge Fe-Ti-V Oxide Deposit in the Emeishan Large Igneous Province, Southwest China: in    Econ. Geol.   v.107 pp. 507-524
Hong Zhong, Xin-Hua Zhou, Mei-Fu Zhou, Min Sun and Bing-Guang Liu   2002 - Platinum-group element geochemistry of the Hongge Fe-V-Ti deposit in the Pan-Xi area, southwestern China: in    Mineralium Deposita   v37 pp 226-239

Porter GeoConsultancy Pty Ltd (PorterGeo) provides access to this database at no charge.   It is largely based on scientific papers and reports in the public domain, and was current when the sources consulted were published.   While PorterGeo endeavour to ensure the information was accurate at the time of compilation and subsequent updating, PorterGeo takes no responsibility what-so-ever for inaccurate or out of date data, information or interpretations.

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