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⇱ Komatiite: Mineral information, data and localities.

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Komatiite

A rock classification type
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About KomatiiteHide

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Name:
Named for the locality: Komati River, Barberton, Transvaal, South Africa.
A variety of ultramafic lavas that crystallize from high temperature magmas with 18% to 32% MgO. They often form pillows and have chilled flow-tops and usually display well-developed spinifex textures with intergrown skeletal and bladed olivine and pyroxene crystals set in abundant glass. The more highly magnesian varieties are often termed peridotitic komatiite. Now defined chemically in the TAS classification.

These rocks are mostly Archaean, and nearly always altered to serpentine and/or carbonate-rich metakomatiites.




Unique IdentifiersHide

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Mindat ID:
48568
Long-form identifier:
mindat:1:1:48568:7

Similar NamesHide

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Kamotoite-(Y)A valid IMA mineral speciesY2(UO2)4(CO3)3O4 · 14H2O
KombatiteA valid IMA mineral speciesPb14(VO4)2O9Cl4

Classification of KomatiiteHide

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Sub-divisions of KomatiiteHide

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Mineralogy of KomatiiteHide

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Essential minerals - these are minerals that are required within the classification of this rock:
OlivineM2SiO4
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
PyroxeneADSi2O6

Internet Links for KomatiiteHide

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mindat.org URL:
https://www.mindat.org/min-48568.html
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References for KomatiiteHide

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Reference List:
Quick NavTopAbout KomatiiteUnique IdentifiersSimilar NamesClassification Sub-divisions Mineralogy Internet Links References
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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
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