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⇱ Lamprophyric-pyroxene-calcite-biotite olivine-melilitite: Mineral information, data and localities.

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Lamprophyric-pyroxene-calcite-biotite olivine-melilitite

A rock subtype
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About Lamprophyric-pyroxene-calcite-biotite olivine-melilititeHide

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An unusual and difficult rock to categorise; usually considered an intrusive, ultrapotassic rock, or an alkaline ultramafic igneous rock containing phlogopite-biotite, melilite, pyroxene, calcite and olivine.
Also considered to be a lamprophyre chiefly composed of biotite or phlogopite and melilite as essential minerals, commonly with olivine, calcite, and clinopyroxene. Perovskite, apatite, nepheline, and garnet may be present.

Also known as alnöite.

Ref: AGI


Unique IdentifiersHide

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Mindat ID:
48100
Long-form identifier:
mindat:1:1:48100:7

Classification of Lamprophyric-pyroxene-calcite-biotite olivine-melilititeHide

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Mineralogy of Lamprophyric-pyroxene-calcite-biotite olivine-melilititeHide

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Essential minerals - these are minerals that are required within the classification of this rock:
CalciteCaCO3
MeliliteCa2(Al,Mg,Fe)((Al,Si,B)SiO7)
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
OlivineM2SiO4
PyroxeneADSi2O6

Synonyms of Lamprophyric-pyroxene-calcite-biotite olivine-melilititeHide

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Internet Links for Lamprophyric-pyroxene-calcite-biotite olivine-melilititeHide

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mindat.org URL:
https://www.mindat.org/min-48100.html
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References for Lamprophyric-pyroxene-calcite-biotite olivine-melilititeHide

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Quick NavTopAbout Lamprophyric-pyroxene-calcite-biotite olivine-melilititeUnique IdentifiersClassification Mineralogy SynonymsInternet Links References
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