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Lakarpite

A rock subtype
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Name:
Named after Lakarp, Norra Kärr, Sweden.
A local name for a coarse-grained variety of nepheline syenite consisting of alkali feldspar, altered nepheline, abundant arfvedsonite, aegirine and a little pectolite.


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Unique IdentifiersHide

Mindat ID:
51868
Long-form identifier:
mindat:1:1:51868:4

Classification of LakarpiteHide

Mineralogy of LakarpiteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Amphibole > Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
Feldspar > Alkali FeldsparA subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium.
Feldspathoid > NephelineNa3K(Al4Si4O16)
Pyroxene > Clinopyroxene > AegirineNaFe3+Si2O6
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
PectoliteNaCa2Si3O8(OH)

Internet Links for LakarpiteHide

References for LakarpiteHide

Reference List:
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