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Cortlandtite

A rock subtype
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A variety of olivine-pyroxene-hornblendite composed of large crystals of hornblende poikilitically enclosing olivine, hypersthene and augite.


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Unique IdentifiersHide

Mindat ID:
51044
Long-form identifier:
mindat:1:1:51044:2

Classification of CortlandtiteHide

TRI__1f9d6f4ae4133d865b278c78f0cc6a5c.png

Modal classification of ultramafic rocks (after Streckeisen, 1973)

Mineralogy of CortlandtiteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Amphibole > HornblendeAnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
Hypersthene(Mg,Fe)SiO3
Olivine GroupM2SiO4
Pyroxene > Clinopyroxene > Augite(CaxMgyFez)(Mgy1Fez1)Si2O6

Synonyms of CortlandtiteHide

Internet Links for CortlandtiteHide

References for CortlandtiteHide

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