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Damkjernite

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Name:
The name, given by Broegger in 1921, is for the locality Damkjern (or Damtjern), Fen complex, Norway.
A melanocratic variety of nepheline lamprophyre. A hypabyssal rock containing phenocrysts of biotite and titanian augite in a groundmass of the same minerals with some nepheline, calcite and k-felspar, perovskite, and magnetite.
Also spelled: damtjernite.


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Classification of DamkjerniteHide

Mineralogy of DamkjerniteHide

Essential minerals - these are minerals that are required within the classification of this rock:
CalciteCaCO3
Feldspar > Alkali Feldspar > OrthoclaseK(AlSi3O8)
Feldspathoid > NephelineNa3K(Al4Si4O16)
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Titanian Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6

Synonyms of DamkjerniteHide

References for DamkjerniteHide

Reference List:
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Le Maitre (ed.) (2002) Igneous Rocks - A Classification and Glossary of Terms. Cambridge Press

Internet Links for DamkjerniteHide

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