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Lamprophyric-pyroxene-calcite-biotite olivine-melilitite

A rock subtype
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01464660017271952552680.jpg
Lamprophyric-pyroxene-calcite-biotite olivine-melilitite

Sundsvall, Västernorrland County, Sweden
03256930017271952563271.jpg
Lamprophyric-pyroxene-calcite-biotite olivine-melilitite

Sundsvall, Västernorrland County, Sweden
01464660017271952552680.jpg
Lamprophyric-pyroxene-calcite-biotite olivine-melilitite

Sundsvall, Västernorrland County, Sweden
03256930017271952563271.jpg
Lamprophyric-pyroxene-calcite-biotite olivine-melilitite

Sundsvall, Västernorrland County, Sweden
01464660017271952552680.jpg
Lamprophyric-pyroxene-calcite-biotite olivine-melilitite

Sundsvall, Västernorrland County, Sweden
03256930017271952563271.jpg
Lamprophyric-pyroxene-calcite-biotite olivine-melilitite

Sundsvall, Västernorrland County, Sweden
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About Lamprophyric-pyroxene-calcite-biotite olivine-melilititeHide

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

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

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

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

Essential minerals - these are minerals that are required within the classification of this rock:
CalciteCaCO3
MeliliteMelilite was originally described in 1796 from Capo di Bove, Alban Hills, Rome Province, Latium, Italy.
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
OlivineCommonly used as a synonym for a member of the Fayalite-Forsterite Series, but more generally and properly ...
PyroxeneA petrological term for Pyroxene Group.

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

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

References for Lamprophyric-pyroxene-calcite-biotite olivine-melilititeHide

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