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Textures of Igneous Rocks

Hypocrystalline texture: plagioclase, biotite and magnetite are set in glass

Glassy welded crystal tuff (Eutaxitix texture)

Porphyritic texture (andesite) phenocrysts of plagioclase and augite in fine-grained groundmass of plagioclase and glass

Poikilitic texture (olivine enclosed by plagioclase oikocryst

Intergarnular texture in olivine gabbro

Interstital texture : patches between plagioclase are occupied by glass

Graphic granite

Micrographic texture in aplite (intergrowth of quartz and alkali feldspar)

Poikilitic texture

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