Lamprophyric-pyroxene-calcite-biotite olivine-melilitite
A rock subtype
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About Lamprophyric-pyroxene-calcite-biotite olivine-melilitite
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
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 Identifiers
Mindat ID:
48100
Long-form identifier:
mindat:1:1:48100:7
GUID
(UUID V4):
(UUID V4):
d3f985d7-c459-4841-b4dd-e121eee0da82
Classification of Lamprophyric-pyroxene-calcite-biotite olivine-melilitite
- Rock
- Igneous rock
- Exotic crystalline igneous rock
- Melilite-bearing rock
- Fine-grained melititic rock
- Olivine-melilitite
- Lamprophyric-pyroxene-calcite-biotite olivine-melilitite
- Olivine-melilitite
- Fine-grained melititic rock
- Melilite-bearing rock
- Exotic crystalline igneous rock
- Igneous rock
Mineralogy of Lamprophyric-pyroxene-calcite-biotite olivine-melilitite
Essential minerals - these are minerals that are required within the classification of this rock:
| Calcite | CaCO3 |
| Melilite | Ca2(Al,Mg,Fe)((Al,Si,B)SiO7) |
| Mica > Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Olivine | Commonly used as a synonym for a member of the Fayalite-Forsterite Series, but more generally and properly ... |
| Pyroxene | A petrological term for Pyroxene Group. |
Synonyms of Lamprophyric-pyroxene-calcite-biotite olivine-melilitite
Internet Links for Lamprophyric-pyroxene-calcite-biotite olivine-melilitite
mindat.org URL:
https://www.mindat.org/min-48100.html
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Sundsvall, Västernorrland County, Sweden