Epidiorite (of Gümbel)

A rock subtype

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A metamorphosed gabbro or dolerite in which generally fibrous amphibole (uralite) has replaced the original clinopyroxene (commonly augite). It is usually massive but may have some schistosity. Commonly found as dykes and usually composed of amphibole, plagioclase, chlorite, ilmenite and magnetite.

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Unique IdentifiersHide

Mindat ID:

51202

Long-form identifier:

mindat:1:1:51202:4

GUID
(UUID V4):

62ec5008-4f23-4044-a535-63c6331915b0

Classification of Epidiorite (of Gümbel)Hide

Rock
- Metamorphic rock
  - Meta-igneous rock
    - Metadolerite
      - Epidiorite (of Gümbel)
    - Metagabbro
      - Epidiorite (of Gümbel)

Mineralogy of Epidiorite (of Gümbel)Hide

Essential minerals - these are minerals that are required within the classification of this rock:

Amphibole	(Na, K, ◻)(Ca,Na)₂(Mg,Fe,Al)₅((Si,Al)₈O₂₂)(OH,F,Cl,O)₂
Chlorite	A name commonly used for undifferentiated members of the chlorite group.
Feldspar > Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ilmenite	Fe²⁺TiO₃
Magnetite	Fe²⁺Fe³⁺₂O₄

Internet Links for Epidiorite (of Gümbel)Hide

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References for Epidiorite (of Gümbel)Hide

Reference List:

Fettes (et al.), Metamorphic Rocks - A Classification and Glossary of Terms (2007) Cambridge University Press

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