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K-Feldspathization

Chemical Process (Alteration) - Open system under ground (Alkaline metasomatism)

Synonym

Potash feldspathizaiton

Index Minerals

K-feldspar

Required Geological Setting

Metasomatic rocks (Alkaline)

Occurrence

Metasomatic zone formed by alkaline hydrothermal fluid produced at the late stage of differentiation of I-type Granitic magma.

Change of mineral assemblages

  • [ Extinct ] Quartz, Biotite, Hornblende
  • [ Appear ] Orthoclase, Microcline

Mineral Assemblages

  • [ Felsic Rocks ] Orthoclase, Microcline, Albite

Localities

  • Yabuhara mine (K-feldspar)
  • Mizanori mine (K-feldspar)

Related Occurrences

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