Pilotassitic Texture

Pilotassitic texture is typical of volcanic rocks, in which the microlites (mainly feldspar) in the groundmass are arranged in sub parallel mode.

Bibliography



• E. WM. Heinrich (1956): Microscopic Petrografy. Mcgraw-hill book company,inc
• David Shelley (1983): Igneous and metamorphic rocks under the microscope. Campman & Hall editori.
• Cox et al. (1979): The Interpretation of Igneous Rocks, George Allen and Unwin, London.

Photo
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Olivine crystals in a basalt with pilotassitic groundmass. PPL image, 2x (Field of view = 7mm)
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Olivine crystals in a basalt with pilotassitic groundmass. XPL image, 2x (Field of view = 7mm)
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Olivine crystals in a basalt with pilotassitic groundmass. PPL image, 2x (Field of view = 7mm)
pilotassitica2012d(5).jpg

Olivine crystals in a basalt with pilotassitic groundmass. PPL image, 2x (Field of view = 7mm)
pilotassitica2012d(6).jpg

Olivine crystal in a basalt with pilotassitic groundmass. PPL image, 10x (Field of view = 2mm)
pilotassitica2012d(7).jpg

Olivine crystals in a basalt with pilotassitic groundmass. PPL image, 10x (Field of view = 2mm)
pilotassitica2012d(8).jpg

Olivine crystal in a basalt with pilotassitic groundmass. PPL image, 10x (Field of view = 2mm)
pilotassitica2012d(9).jpg

Basalt with pilotassitic groundmass. PPL image, 10x (Field of view = 2mm)
pilotassitica2012d(10).jpg

Basalt with pilotassitic groundmass. XPL image, 10x (Field of view = 2mm)
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Basalt with pilotassitic groundmass. XPL image, 10x (Field of view = 2mm)