Mawachi a region in the Bawlake district of the Kayah State (formerly called Karenni State) of Myanmar.

In the 1930s, the Mawchi Mine was the most important source of tungsten in the world. Mawchi contained the world's largest granite-hosted tin-tungsten vein system before World War II. Ore production from 1930 to 1940 amounted to 2,000 to 6,000 tonnes annually, which amounted to 60% of Myanmar's total production, and one third of the world's tungsten. From 1980 to 2010, 25,000 tonnes of tin-tungsten ore were produced. Mawchi is located in the Western Granite Province, composed of Cretaceous to Eocene I-type granites and S-type granites, dominated by ilmenite-series rocks of granodioritic and syenogranitic composition.[1][2]

References

  1. ↑ Myint, A.Z.; Yonezu, K.; Boyce, A.J.; Selby, D.; Schersten, A.; Tindell, T.; Watanabe, K.; Swe, Y.M. (2018). "Stable isotope and geochronological study of the Mawchi Sn-W deposit, Myanmar: Implications for timing of mineralization and ore genesis". Ore Geology Reviews. Retrieved 11 July 2021.
  2. ↑ Allen, Louis (1984). Burma: The Longest War 1941-45. London: Phoenix Press. p. 7. ISBN 9781842122600.

18°49′N 97°09′E / 18.817°N 97.150°E / 18.817; 97.150


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