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Melanocratic nephelinolite

A rock subtype
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A nephelinolite consisting of 10% to 30% nepheline with pyroxene. Previously called melteigite.


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Unique IdentifiersHide

Mindat ID:
48396
Long-form identifier:
mindat:1:1:48396:2

Classification of Melanocratic nephelinoliteHide

Sub-divisions of Melanocratic nephelinoliteHide

Mineralogy of Melanocratic nephelinoliteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspathoid > NephelineNa3K(Al4Si4O16)
PyroxeneADSi2O6
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Amphibole > HornblendeAnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

Synonyms of Melanocratic nephelinoliteHide

Internet Links for Melanocratic nephelinoliteHide

References for Melanocratic nephelinoliteHide

Reference List:
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