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greisen

/ˈɡraɪ.zən/

Traduction: Roche granitique constituée principalement de quartz et de micas, souvent formée par l'altération du granite sous l'action de fluides à haute température.

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noun

/ˈɡraɪ.zən/formaltechnical
  • frRoche granitique constituée principalement de quartz et de micas, souvent formée par l'altération du granite sous l'action de fluides à haute température.

A granitic rock composed primarily of quartz and mica, often formed by the alteration of granite through the action of high-temperature fluids.

  1. Granitic rockC2formalscientific

    A metamorphic rock derived from granite, composed primarily of quartz and mica, often formed by the alteration of granite by high-temperature fluids.

    frGreisen (roche granitique)

    • The geologist identified the sample as greisen due to its high quartz and mica content.
    • Greisen deposits are often associated with tin and tungsten mineralization.
    • The outcrop showed a distinct transition from granite to greisen.