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Fritted-rock

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A compact, vesicular or slaggy metamorphic rock of any composition with a glass content ranging from a few percent up to a maximum of 20% vol., and either produced by contact metamorphism in volcanic to subvolcanic settings or generated by combustion metamorphism.


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Classification of Fritted-rockHide

Sub-divisions of Fritted-rockHide

Mineralogy of Fritted-rockHide

Essential minerals - these are minerals that are required within the classification of this rock:
GlassAn amorphous, homogeneous material with a random liquid-like structure generally formed due to rapid cooling.
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Feldspar > Alkali Feldspar > K FeldsparPotassium-dominant feldspars with unknown crystal symmetry and Al-Si ordering state.
Silica > QuartzSiO2

References for Fritted-rockHide

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

Internet Links for Fritted-rockHide

Mineral and/or Locality  
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